Imperial Japanese Navy Interwar Chronograph #278
Vintage

Imperial Japanese Navy Interwar Chronograph #278

By Lépine · Aug 16, 2024 · 20 replies
Lépine
WPS member · Horological Meandering forum
20 replies3841 views17 photos
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Lépine, a distinguished contributor to WatchProSite, presents a meticulous follow-up to his research on a rare Imperial Japanese Navy chronograph. His latest findings definitively identify the S. Smith & Son timepiece, marked with the identifier #278, as an Edouard Heuer Ref. 102 A. This article delves into the historical context of its procurement and potential use during a pivotal period of Anglo-Japanese technological exchange.

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After some comparative studies with other watch information available on the internet,
we are able to determine that the S.Smith&Son chronograph with the Imperial Japanese Navy 
identifier #278 is a Ed. Heuer Ref 102 A. 
































This watch was most likely procured between 1921-1924. This watch has a serial number in the exact same range and is dedicated in 1924




Note: S.Smith&Son is a known supplier to the British Admiralty and also to the RAF.

chronopedia.club








This is from Konrad Knirim's books. 




At this point, I can only speculate to the use of the watch at that time period. So the Imperial Japanese Navy and the British Royal Flying Corp were heavily involved in an exchange of technology in 
order to strengthen Japan's naval aviation capabilities. Since these planes were now capable of longer distances and required navigation over water, it may have been an experiment to see if chronographs
could help either time bombs or help navigation to find the newly developed aircraft carriers. As we know, distance and fuel was very difficult to calculate so the amount to time maybe the only alternative
to determine how much fuel is left.



















sky soldier
空兵
Sempill Mission

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The Discussion
Lépine
Aug 16, 2024

Thank you again for the welcome atmosphere of this great forum. It is nice to see there is enthusiasm for all types of watches.

Lépine
Aug 16, 2024

Thank you, I don't have luxury watches, so I wonder how I fit in the WatchProSite. I'm more curious about history and watches that are identified with historical events. I'm happy to hear about peoples reactions to some of my obscure watches.

Lépine
Aug 16, 2024

I have had several watches that have been put into John Goldberger's Longines book and also Zaf Basha's Military watch book. Maybe I'll find someone interested in publishing my Japanese military watches.

GU
GuyT
Aug 16, 2024

for their history and the research, story that you tell us. Thank you.

JA
Jay (Eire)
Aug 16, 2024

Much appreciated, I look forward to further posts.

FM
fmc000
Aug 17, 2024

I believe your watches fit extremely well in a site like this. No need to be luxury to interest people (or at least to interest me :-D )

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