Welcome to the Forum.
The mark is that of R. Gleason & Sons of Dorchester, Massachusetts.
Are you sure the item is silver?
Dognose: Many thanks for sharing your knowledge.
Seems I've been wrong on all counts thus far... starting out in South America and ending up in Massachusetts!
I had thought the item was silver or silver plate but, having read about R. Gleason & Sons, I now think it's plated or Britannia. The broken handle seems to be plated pot metal.
There's a certain crudeness to the construction that lead me to wonder if it was handmade or just a piece for someone to learn on. The maker's "medallion" is relatively crudely applied and there's a blob (solder?) on the underside.
In any event, the mystery is solved thanks to you and the Forum.
Thanks also for your archives which allowed me to identify this lovely piece by Truman Bailey.
With appreciation to all!