Silver Platter Unknown Makers Mark. Help

British Silver Reading Silver Hallmarks
1

Hi. I have this large Silver Platter, 28 X 18, and am unable to find information about the makers mark anywhere. Anybody have any idea who this is?
silverplatemmt.jpg

2

That silverplate mark was used by an American firm called the Birmingham Silver Company.
Located in Yalesville, Connecticut. Mid to late 20th century.

3

Thanks for your help.