The last calibre family from Bulova. Records indicate it was used at least until 1979, possibly beyond. Versions went up to 23 jewels, KIF Ultraflex shock system. Frequency 21,600 a/h. 'AO' series had quickset date.
Movement in a currently unknown Model with date window only; dated 1974. Input'ed start and stop dates for production are a guess based on verified movements in the database.