1972 Omega Constellation 1250 F300Hz Date Watch (ESA 9162) – Fully Serviced.    (ref 511)

This fabulous vintage Omega 1972 Constellation Chronometer F300Hz watch has been restored and fully serviced following a complete strip down, clean, reassembly, and correct lubrication and timing.

It has the iconic ESA chronometer electronic tuning fork movement, known as the ‘hummer’ from its distinctive sound, and has been brought up to spec with the addition of the new, new old stock (NOS), and replacement parts listed below.

Paypal only please, with shipment strictly to the buyers Paypal ‘confirmed’ address. Sorry no offers.

Make/Model: Omega Constellation Chronometer F300Hz electronic tuning fork watch.

Movement: Omega 1250 (ESA 9162) with serial no. 34620332 from 1972 year of manufacture, with ‘quickset’ date function.

Casing: Stainless steel, Omega Constellation type ‘198.0006’ with screw case back. Original Omega stainless steel bracelet type ‘1177/177’ with brand new signed clasp. Laid flat it measures 20cm to the 2^nd last clasp adjustment hole, and can be shortened by up to 2cm. Omega signed crown. 35mm across not including the crown/lugs.

Dial/hands/Crystal: Beautiful original Omega 2-tone silver dial with chrome/black hour markers. Original hands including distinctive red sweep seconds hand. Armoured chrome ring crystal.

New/NOS items: Omega bracelet clasp piece. Date indicator dial. Battery insulator. Correctly sized 344 button cell battery. Crown micro O-ring.

Replacement items: Transistor to T-unit.

Service/refurb: Light hand polish of case, back, and bracelet to reduce the appearance of any blemishes. Light hand polish of the crystal with specialist compound.
Only the best Moebius oils and grease have been used and applied correctly during the comprehensive service (types 9010, 9020, 8201 Moly, 8200, 8300, silicone).
All relevant parts demagnetised.
Extended bench test accuracy is to within a couple of seconds per day.

Other: Whilst the signed Omega bracelet clasp is brand new, the remaining underlying folding pieces of the clasp are original.
As expected of a vintage watch there are signs of age/patina/marks etc, but this one is in great condition overall. As with most vintage watches it no longer has its original box or paperwork.
Note that my vintage watches have no guarantee of being water resistant/proof, and you should assume they are not.
The crown is pulled out to the mid stage to ‘quickset’ the date in either direction; it is then pulled out a stage further in order to set the hands (or store the watch as this is also the power Off position).

As additional info for those already familiar with these movements - it has been serviced in accordance with the Omega technical manual, including the gauged set-up of both the index and retain click jewels, and the exacting and essential lubrication of the friction wheel with specialist grease. It is drawing 7/8 micro amps full-load current at 1.35/1.55V, and has been tested to work correctly over the 1.05 to 1.65V voltage range. All electrical resistance measurements of coils and transistor are satisfactory.

Important:-  Please read the following notes, to ensure you are happy with them before making a bid:

1. For All Items:

Unless otherwise stated, used items have normal wear and tear commensurate with age, and all age/date detail is approximate. No guarantees or warranties given after dispatch. Postage claims and insurance cover are the responsibility of the buyer, regardless of the seller options offered. No refunds for cosmetic or non-functional defects. Any returns must be received in the same condition as originally sent by the seller, and are subject only to there being a significant deviation from the above photos and description. All descriptors (such as ‘good’ ‘excellent’ ‘superb’, or similar) are used in context with the items age and reasonably expected usage/wear over its lifetime, are subjective in that they are the opinion of the seller, and as such might not necessarily be shared by the buyer. The images form the primary description and the item is ‘sold as photographed’, please study the pictures carefully as they take precedence over all written information. The item description is given in good faith; I am not a professional expert so cannot be responsible for any omissions, but I am happy to answer any questions you may have.

2. In Addition, for Watches and Clocks:

Used and vintage/antique timepieces are limited in their ability and their consistency to deliver continuous and accurate time regulation due to factors such as: Inherent design, age, condition/wear, user handling, service history, storage and environmental conditions, transit handling, user winding habits/frequency, and are part of the character and appeal of owning these collectable items. This finite ability should not be unduly overestimated, and certainly should not be compared to the expectations of that of modern-day timepieces. I consider a tolerance of +/-3 minutes per day accuracy to be good, and +/-1 min per day to be excellent (and most of my wrist watches are even better than this). Following shipment it is expected that any timepiece will need a period of settling and adjustment to its time regulation, regardless of the sellers item description at the time of sale. This should be performed by a qualified and competent person at the buyers expense. In addition, unless specifically described as “fully” serviced/cleaned, it is to be assumed that all timepieces will require some level of service/repair from the time of their receipt, and at the buyers expense. Buyers should make allowances for this potential expense when bidding. Vintage watches have no guarantee of being waterproof regardless of their design or wording, and you should assume and care for them as though they are not. The seller accepts no returns or liability from damage or problems arising from buyer initiated access to, and intervention with watch/clock movements, casings and other components. The seller accepts no liability or claims relating to issues arising from any advice or guidance given in good faith after the time of sale.

Please ensure you are happy with the above notes before making a bid. Thanks.

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