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Up for sale is a classic 1970s Questar Automatic wristwatch. This Swiss-made timepiece features a robust gold-plated case with a matching Montal Rolled Gold stainless steel bracelet. It is powered by the legendary ETA 2551 automatic movement with 21 jewels, ensuring reliable timekeeping and a smooth sweep of the second hand.
TECHNICAL HIGHLIGHTS
The heartbeat of this watch is the ETA 2551 movement. ETA is the world's leading manufacturer of Swiss movements, and the 2500 series was a staple for many high-quality Swiss brands in the mid-20th century. This movement features an automatic winding rotor, 21 jewels for reduced friction, and Incabloc shock protection, making it a durable daily wearer even by modern standards.
OVERALL CONDITION: 8/10 (Very Good Vintage Condition)
CASE & BRACELET: 8/10 (Gold plated case, Montal rolled gold bracelet showing minor age-appropriate wear)
DIAL: 9/10 (Golden sunburst dial with date window at 3 o'clock)
MOVEMENT: 9/10 (High-grade ETA 2551 Swiss Automatic, 21 Jewels)
BRAND: Questar (Swiss Made)
MODEL REF: 208 C (Engraved on the case back)
MOVEMENT: ETA 2551 Automatic (Self-winding)
https://ranfft.org/caliber/4097-ETA-2551
Basic Information
| Name |
ETA 2551 |
| Manufacturer |
ETA |
| Launch Year |
1965 |
| Caliber Family |
Description
2540, 2544: manual wind
2541, 2545: manual wind, date
2550: automatic
2551: automatic, date
suffix R: ball-bearing rotor (not in signature)
Related calibers
ETA 2550, ETA 2550R, ETA 2551, ETA 2551R |
| Is COSC certified |
No |
Technical Details
| Lignes Dimensions |
7.75 ‴ |
| Dimensions |
17.5 mm |
| Height |
4.65 mm |
| Further Measures |
Mounting Diameter (Dm): 17.2mm
Stem height (T): 1.65mm
Mounting Height (F): 1.05mm |
| Power Reserve |
42 hours |
| Frequency |
21,600 vph |
| Jewels |
23 |
| Lift Angle |
51 degrees |
Complications and Specifications
| Shape |
Round |
| Complications |
|
| Shock Protection |
Incabloc |
| Regulator Type |
Pinned Regulator (or Index Regulator) |
| Movement Type |
Automatic |
| Rotor Type |
Central Rotor |
| Escapement Type |
Swiss Lever |
| Control Type |
Balance Wheel |
| Winding Type |
Automatic (Self-Winding) |
| Setting Type |
Stem Set |
Additional Information
| Hand Sizes |
1.20 x 0.70 x 0.20mm |
| Hand Count |
3 |
| Country Of Manufacture |
Switzerland |
| Notes |
Remarks: 1965-1972
Other data: balance staff: U3220 stem: W3151 mainspring / battery: 1.30 x 7.0 x 0.08mm stem ronda: 1670 (7,75) Mainspring: 1.300 x 7.000 x 0.075 x 240.000 mm
Ranfft mentioned about this caliber: There are variants with this quantity of jewels 17, 21, 23 |
| Signature |
1970: 12608399, Chs. Tissot & Fils, Swiss, 21 Jewels - Patented; Incabloc (Tissot 744, ETA 2551) |
FEATURES: Date display, Incabloc protection, Antimagnetic, Stainless steel back.
Dimensions of watches
| Case width |
1.12 inch (28.5 mm) |
| Case width with crown |
1.18 inch (30.0 mm) |
| Length (lug to lug) |
1.16 inch (29.5 mm) |
| Thickness |
0.41 inch (10.5 mm) |
| Glass diameter |
0.85 inch (21.5 mm) |
| Total weight |
1.34 oz (38.0 g) |
Dimensions of watches

RECOMMENDATIONS
All Antique watches are mechanical. Many repairs will not be cheap, as most likely they will require replacement of non-standard parts (unlike most late model watches).
- Antique watches should not be beaten or dropped - because repairs may be expensive.
- Antique watches are generally NOT waterproof. This is because waterproofing was not in general production until the middle of the 20th century for most watches. Therefore you should protect your antique watch from exposure to moisture.
- If your watch becomes wet it should be dried off quickly. Carefully open all covers and use a hair drier to blow dry the movement, dial, covers, crown. This will reduce the amount of rust.
- If your watch becomes wet with any kind of salt water you should immediately immerse or spray your watch with fresh (no-salt) water to remove all the salt from the works before drying the watch completely. Any salt left in the watch will combine with moisture in the air to rust metal components of the movement, case etc.
- Winding any mechanical watch tight may break the mainspring. If you can avoid it do not wind the watch hard.
- When adjusting the hands of your watch, move them in a clockwise direction only. Counter-clockwise adjustments may damage the movement. It is desirable to adjust the hands of your watch at the same time every day. An automatic or self-winding watch should be worn for at least 8 hours a day. It is a mechanical watch in which the mainspring is wound automatically as a result of natural motion of the wearer's arm, to provide energy to run the watch, making manual winding unnecessary.
- If you must adjust counter-clockwise make it for small adjustments only (i.e. for minutes, NOT hours).
- Be careful and gentle when adjusting the movement speed (faster or slower). Don't make sharp movements, and don't touch other components in the movement especially the pendulum mechanism.
- Every 2-3 years it is necessary to service and oil vintage watches. If the course of your watches is worsening and the accuracy of the reduction in the duration of the clock (autonomy) from one fully wound spring - it need a service.
- IF the watch is dirty - allow the watch to run down, don't wind it again until you have it serviced by a qualified watch repair expert. Dust will absorb and remove important lubricants and cause the movement pieces to wear down.
- To clean the case, dial and crystal you should use a cloth that does NOT leave fibers as these may get caught up in the movement. Check with your Watch repair expert to get an appropriate cloth.
- Keep your antiques watch away from magnets. Strong magnetic fields may affect the accuracy of your watch since some vintage watches were made with iron based components in the movement.
- Most Cases and Covers are fine components and will not handle abuse well. The watch should not be shaken, beaten, or stressed.
- Antique watches generally experience an error of up to 5-7 minutes a day. Any accuracy of +- 5 minutes is very good.
- Mechanical watch is not recommended to use for engage in extreme sports, and expose them to excessive vibration loads. Recoil force, which take on the clock, affect their reliability and precision. No matter how perfect was not anti-shock mechanism, there is always the chance of excessive load that details of the mechanism can not survive.
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Watch with calendar. It is not recommended to adjust, the date between 20.00 and 06.00, because at this time involved a mechanism for automatic adjustment date. Translation pointers calendars manually in this position arrows may damage the mechanism. Date changes should be made, relegating pre-clockwise to lower sector of the dial (for example, to position 6 (18.00) hours).
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Chronograph watches. In most cases, these watches contain the "start/stop" button and "reset" button. It is strongly recommended not to press the "reset" if the chronograph is running. Before you use the "Reset" button need to stop the chronograph by button "start/stop". Using the "reset" when running chronograph can damage the mechanism of most models of watches.
PAYMENT
- Total amount due includes the final auction price plus Shipping.
- Shipping will be determined based upon the SHIP TO address.
PLEASE NOTE: Shipping does not include duties, local taxes or any other importation fees.
SHIPPING
We ship to any country. This item will be shipped to you from Europe (Ukraine) via registered airmail with tracking number and insurance within 7-14 days (except for the weekends and holidays) after the payment is fully received.
Typical Delivery Time
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European Countries: about 7-10 days;
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USA, Japan & other: about 10-14 days.
NOTE: Delivery time may increase because of postal services and/or customs. Please, don't worry and check location of your parcel using provided tracking number. In spite of delays all our previous lots have been successfully delivered!
The item will be packed very carefully!
RETURNS/REFUNDS
- You have 3 days to contact us and 5 days to return it from the date it was received. If this item is in your possession more than 3 days, it is considered used and we will not issue you a refund or replacement. There are no exceptions!
- All returned items must be in the original packaging and you must provide us with the shipping tracking number, specific reason for the return, and your eBay ID.
- We will refund your full winning bid amount, upon receipt of the item in its original condition and packaging with all components and accessories included, after both Buyer and Seller cancel the transaction from eBay or you may choose to have a replacement.
- Return shipping is to be paid by the Buyer.
FEEDBACK
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