Quote Originally Posted by fraser lindsay View Post
Robert Allison. Very difficult to tell the date mark, but judging by the design somewhere between mid 60's to 82 when they ceased trading.
Yes it's easier to see on the new photos - so RA not RR. With the other hallmarks and this info it would date it from 1975 (when the Lion Rampant replaced the Thistle for Scottish silver) and 1982.

These are the relevant marks for that date range - not sure if it helps narrow things down any further: