1880 tea service also stamped "Rait, Glasgow", but probably as a retailer's mark (for D C Rait & Sons - see DCR marks), and with a design registration mark dated 2 Jul 1878. Could possibly be John Rait, listed as a jeweller in the 1881 census in Dumbarton Road, Partick.
James Ramsay
1911
Cup
High Street, Dundee; subsequently Reform Street, Dundee
J R & J N
1850
Spoon
J R & W Laing (James Rankine Laing & William Laing)
1914
Ashtray, brooch, fob medal
Brunswick Street, Glasgow; subsequently (from 1900) Gordon Street, Glasgow