http://www.fega.com/prodserv/CastsSC.asp?recidparam=59

FEGA sells a casting of this (same?) floorplate as Griebels engraving work.
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Also another casting of Griebel's work using the same scene.
Not uncommon for engravers to take an embossed lift of a favorite and use it over again a number of times.
Sometimes changing small details,,sometimes not. It saves alot of layout time.
http://www.fega.com/prodserv/CastsSC.asp?recidparam=50