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History of Casio DBC, DBX, and DBM Data Bank Calculator Watches | WatchUSeek Watch Forums
Vtg & Very Rare Casio DB 150 Databank 150 Memory Wrist Watch good Condition - Etsy
Casio Databank 150
CASIO DB-150 DATA BANK watch from 1996 #casio - YouTube
Replacing the battery in a Casio Databank 150 watch | SysArchitects