Unable to Identify Spoon Marks

[Rendaridra]

I am unable to find any information on these marks on this spoon. Can anyone tell me if it is genuine or a fake?

[legrandmogol]

JOHN GILBERT
JOHN GILBERT & CO LTD
JOHN GILBERT & SONS
Birmingham & London
Active from 1812 as 'Old Sheffield' maker. The firm was listed at 28 Legge Street,7 & 8 Bath Rw and 83-85 Ryland Street, Birmingham. In 1865 was listed as silversmith and electroplater at Ryland Street North, Birmingham with office at 25 Ely Place, Holborn, London. In c. 1880 the firm was converted into a limited liability company under the style of John Gilbert & Co Ltd. Not yet enlightened relationships with Joseph Gilbert and the attribution of marks is hypothetical.

[legrandmogol]

This piece is definitely one of their silverplated pieces done in the old style