Hi, Welcome to the forum. The winged lion mark belongs to Oxford Silversmiths Co.New York, NY c. 1918- c. 1950. I think initials and logo changed over time but it`s definitively the lion seen on your item.
Hi, In regard of the crest, there are items with the same crest to be found elsewhere and there is a possibility it was engraved for decorative purposes, i.e. not in connection with any particular nobility. Regards