1947. As I said I've never seen a stamped Fazackerly. I'm almost sure that BSA engraved as well. They were the only two manufacturers oi No5s. Large numbers of No5s were FTR'd in Ishapore. They have the 'Ishy screw' but don't know whether they were stamped.What year is yours? Most later ones were stamped. I'll post a picture later tonight. Post a picture if you can.