And mine is 1187!!! All good.
I bought mine new in 1974 from Ron May at Cherry Tree Rise - got the receipt somewhere, too. It came with a Sergeant's combination tool and a nifty patch. That latter I still have, but the VERY useful combination tool disappeared a while back, courtesy of a fellow shooter who left with it in his tool box and never came back...
I now have a REAL item from Mr Dyson.