Unique retailer Silver Boston Terrier Dog Pin

Very unique Vintage Boston Terrier Dog Pin. It appears to be hand made but sadly unsigned.It is sterling it has been tested..It has a pale blue cabachion gem stone eye Aquamarine? They even gave him a collar. It measures 11/4×1 I have not cleaned or polished this and as you can see the back could use a retailer good polish. Very good condition