Antique Askos Jug Ewer Goats Cherub Ornate Nicholas Muller Sons 188? 19th Century

Bottom is stamped: Copyright by Nicholas Muller Sons 188? (I can't quite make out the final digit).
One of the goats did come off. I did not attempt to reattach.
It seems to be in pretty good shape otherwise. Please examine photos closely.
It's quite heavy, over 3 pounds. Not sure if made of silver or another metal but is silver in color.