Someone know which Seagull caliber is this? in Chat About Watches & The Industry Here Posted January 22, 2019 Hi everyone! I bought an Aeromatic 1912 A1308 watch (have not received it yet) and I was wondering what caliber does it use. By chance I found the attached pictures, I believe it's the same caliber but I found no information on it, only that it may be a Seagull. Can somebody help? Thank you!!