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Lemania HS9 monopusher chronograph - cal. 15CHT

Resissued to Royal Navy (0552)

£3450.00

Out of stock

Towards the end of WW2 the Hydrographic Survey Unit of the Royal Navy were issued with what became known and the 'Series 1' Lemania monopusher chronographs. The stores code for these watches was HS9, and that has become synonymous with these watches.

The high grade Lemania chronograph movement, includes a chronograph sweep seconds hand and a minute counter in the right hand sub-dial. The chronograph starts, stops and reset from the single pusher button above the crown on the right hand side of the case.

The original dials and hands used radium luminous compound and in the post-war years these were replaced by dials and hands with tritium luminous compound, as signified by the circled T on the dial. The original movements are not shock protected, but some were converted to the Incabloc shock protection system in the post-war period, and some of these had a dial variant with 'Incabloc' marked on it. Strangely these 'Incabloc' tritium dials appear to have been fitted quite frequently to watches that were not converted to Incabloc.

This particular watch has the earlier post-war dial variant with the circled T but not with 'Incabloc' marked, and this is consistent with the movement which does not have Incabloc shock protection.

In the post war years, many of the HS9s, presumably after refurbishment, were re-issued with the the original designation struck through and the Ministry of Defence service code for the Royal Navy - 0552 - along with the NATO stock number marked, which is the case with this example. These watches were issued to Fleet Air Arm aviators.

This watch also has the fixed bars which also seem to have been quite commonly replaced (or possibly not originally fitted).

The watch is in excellent good cosmetic and mechanical condition, and has just been checked and regulated, as described in the condition report.

Cosmetically the watch is in very good, clean condition with only minor marks from use.

The crystal is very good and unmarked.The dial and hands are also in very good condition.

Please refer to the images to make your own judgement about the condition of the watch. The images form an important part of the description.

The original Lemania cal 15CHT movement is in nice clean condition as per image in the listing, and prior to listing was checked and regulated.

Amplitude is 300+ degrees and accuracy is within around a few seconds seconds per day (on the bench, this may differ subsequently and in use - see notes on accuracy below). The listing includes an image of the watch on the timegrapher showing the readings. The chronograph is fully functional and starts, stops and resets from the pusher, with the minute recorder correctly registering elapsed minutes. The watch adjusts correctly from the crown.

The watch is supplied on new Phoenix 20mm Admiralty Grey Phoenix strap.

The watch is absolutely suitable for everyday use, but it is vintage watch so is not recommended for sports or use in extreme conditions. The watch has not been pressure tested so water resistance is not guaranteed. This watch is covered by our non-waterproof 6 month guarantee.

Issued: Yes

Issue details: UK Royal Navy

Date of manufacture: 1944/45

Movement: Lemania cal. 15CHT

Rarity: Not known/verified

Diameter: 37mm

Lug width: 20mm with fixed bars.

Hacking: Yes

Case back: Screw

Screwdown crown: No

Bracelet: Phoenix 20mm NATO

WW2 vintage
Issued to RN Hydrographic Survey Unit (HS9) and then reissued with 0552 stock code
Lemania 15CHT movement
Matching 'non-Incabloc' dial and movement
Recently serviced
Very good condition all round
Supplied on Phoenix 20mm NATO strap
6 months non-waterproof guarantee

The accuracy rate documented in this listing is not guaranteed. The images and figures quoted represent the accuracy recorded at the time of regulation, with the watch dial up and at minimum of two-thirds fully wound. This is a snapshot recorded on the timegrapher machine and has not been verified over a measured 24 hour period against a datum. Although the watch has been serviced as described, and although we do our best to ensure that the watch performs as well as possible and within acceptable limits for a watch of the type and age, it is not a new watch and it has not been restored to 'as new' condition. Accuracy subsequent to sale and in use may differ significantly from the figures shown. This is a vintage watch and is unlikely to perform to the same standards as a new or more modern watch and is sold on this basis. If you are expecting the watch to perform to the same standards as a new watch then please take this into consideration before purchasing. Performance can be also affected by many factors, such as magnetism, environmental conditions or handling during transit which are out of our control.