Nautical Antiques & Marine Art at Land and Sea Collection™ Dive Helmets, Ship Models, Sextants

Navy Boat Clock Polished Brass All 3 Pieces

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CHELSEA NAVY MK I DECK CLOCK 3 PCS

 

This Unique Navy Clock Has Been Sold.
Thank You!

RARE SETH THOMAS WW II U.S. NAVY POLISHED BRASS MARK I BOAT CLOCK

COMPLETE With 3 PIECES
Naval Observatory Cartouche 1940

Presentation Quality

A WW II Seth Thomas MK I Boat Clock In a Forged Polished Brass Three Piece Case.

DIMENSIONS: 3 1/2" Diameter of face 4 1/4" Deep 5" Full Diameter Weight 7 lbs 6 oz

Presented is an outstanding example of a Seth Thomas, back winding, Navy MK I Boat Clock. It has a hinged front that is complete with the backing plate and a shock absorbing mounting plate. One of these plates acts as a water tight cover and shock absorber and the other mounts it to a bulkead. Navy boat and deck clocks are rarely found with their back cover plate, and even more infrequently with the original mounting plate. After 1942, most of these clocks were housed in phenolic cases, and this is the first Seth Thomas version we've seen in a forged case since the 1911 version we sold in 2012. (See http://landandseacollection.com/id887.html) The metal cases were chrome plated. This one is polished brass with a freshly lacquered coating to maintain its polish. Seth Thomas did not number its clocks, but it has the Naval Observatory cartouche and serial number on its face. It is keeping good time compared to a quartz comparison watch.

The Seth Thomas Navy MK I DECK clocks of WW II were manufactured in accordance with military specifications 18C-5 D and 18C-13 dated September 1, 1938.  The design called for an 8 day movement housed in a dust proof, moisture proof case equipped with a cushion bulkhead mounting plate. The black 12 hour dial had luminous hands and dots over the numerals. They are wound, set and regulated through a dust cover at the back of the case. The markings on the dial are "acid etched".

This clock has the movement's case, mounting plate and the   shock absorbing damper plate. 3 pieces total

 


Marvin Whitney in his encyclopedic work, "MILITARY TIMEPIECES" say that these clocks were chromium plated up to 1941 when cases were switched to Bakelite, a phenolic.

Comparative size Navy Boat clock vs Deck clock




Hinged side 
Toggle to dog case
Back dust cover with controls 
Seth Thomas 11 jewel, 8 day movement

 
 
Beneath the hand arbor is etched:
MARK I DECK CLOCK
U.S. NAVY
(NO) 1289,
1940

(NO) represents the Naval Observatory which means the clock not only met the military specifications, but also met the stringent standards of this institution which maintains the Nation's Time Standard. At the bottom of the dial it is marked "Made by Seth Thomas in USA".

The following controls are accessed on the back:

  • Fast - Slow adjustment. To regulate turn towards S to Slow and vice versa
  • Stop - allows to precision setting with master clock
  • Set - moves hands
  • Wind - a key is included

It has a Seth Thomas Model 5160 series, 11 jewel 8 day movement that is wound, set and adjusted through a slotted dust cover at its rear which closes. A separate start/stop mechanism allows it to be synchronized with a master time piece. The removable vibration dampener backing plate is attached to the bulkhead plate by six screws and holds the front case secure by a wing nut dog.

Near blemish free Face of this special Seth Thomas MK I Boat clock

CONDITION: This example has seen about 73 years of service, much of it at sea, and gives the appearance of being new. The face is in very good condition, and shows little evidence of aging when viewed close-up. The dots over the numbers once were painted with irradium for night viewing, but this has been removed because it was radio active. The lens under most light conditions shows clear. The movement has been recently serviced and is keeping good time. A  key is included. The case has been recently polished and lacquered.

NO NONSENSE WARRANTY: We guarantee that this clock will be working on arrival and that our description is entirely accurate or your money back. The only conditions are that an email authorization be obtained within three days, and that the instrument is returned in its original condition and packaging, and insured for its full value. Shipping charges within the continental United States are included in this offer if the error is ours. This does not affect our policy on shipping damage which is discussed below.

PACKAGING: We take great care in packaging our clocks for shipment which includes bubble wrap, placing in a box, and then placing in a larger box surrounded by impact absorbent material. However, we are not responsible, once it is turned over to the carrier. Full Value insurance is required. In the event of damage due to shipping we will assist you in all respects even to filing a claim in your behalf.


This U.S. Navy black face clock has a dramatic appearance and makes a perfect gift or as an addition for your den wall or in a collection.

 

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