Pewter Coffee Pot

This is a Pewter Coffee Pot made by Wallace Bros. silversmith's Circa 1920/30's? At least the basic form was found in a 1931 Wallace Bros. Catalog but the dimensions and finish are not the same. Would that make it the same pot, I question this but experts have said that the one in the catalog was the pot pictured. If it is would this be a model for the finished product? If so, how rare would a makim of a pewter coffee pot be?
I would appreciate any info that may have.

Thanks,
S