Help with pseudo marks.

[GibH]

Hoping someone recognizes these marks. Looks to be keys crossed, a crown, and castle maybe?

 

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[SDIceMan]

I believe this is a silverplate mark of Lawrence B. Smith Co. of Boston. Crossed keys, crown, griffin head. Here is a link:
https://www.925-1000.com/silverplate_S2.html

 

[GibH]

I believe this is a silverplate mark of Lawrence B. Smith Co. of Boston. Crossed keys, crown, griffin head. Here is a link:
https://www.925-1000.com/silverplate_S2.html

The figures are correct, but I'm having a heck of a time trying to find anything with etched marks. Can't find the exact tray either, LBSC has a similar tray, but it's footed, oval, and 17 inches. Mine is 16" round.