Take photos of the movement showing serial number and caseback inside showing the numbers in there.. then go to the Longines Company website and find the section about enquring about your watch.. they will be able to provide you with notes from their archives..Hi all, so i finally opened the case back and it is a Cal. 294. Did some reading and apperantly it is a solid cal with little issue!
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Hi Sempervivens, thanks for your information. Here are some internal pictures.That's interesting, cal 294 isn't even in the Pink Pages. So a pic of the movement would definitely be welcome, and/or you could send a pic (or the whole watch) to Roland Ranfft.
As cal 294 normally should have power reserve indicator, this is probably a cal 291 that is marked 294 on the bridge: I read that Longines particularly made some Conquest's like that during the late 1950's.