The pattern is "Palm", patented in 1871 and one of the first patterns that Tiffany actually manufactured for themselves. The odd thing is that it has no Tiffany mark, just - Sterling, Pat 1871, and the retailer's mark of Starr & Marcus.
Starr & Marcus were also a New York firm, retailers of high end goods and would have been one of Tiffany's main competitors for the carriage trade. Seems odd that Tiffany would have supplied a local competitor and
apparently agreed not to brand the goods.
I'm curious if anyone else has seen known Tiffany goods of the period that are lacking their maker's mark?