Please help to identify the mark

The Basics... Identification Help - What is it?
2

Whole item photo, please.

aB
aB489×696 83 KB
?
aBb
aBb1888×588 232 KB

The answer:
Sheffield Sterling “B in a Shield” Maker Mark Who Dunnit??? | Antiques Board

Need help for spoon ,identifying origin and maker of this whine cooler
Antica tazza argento