Help with ID of Hallmark Please!

I’ve been researching for 3 weeks on who this artist can anyone help?

This artist usually scratches an A close to the Hallmark. I think it might be Calvin Beaay or Calvin Begay as I’ve found some pieces with Calvin Beaay and the same A scratch on them. I’ve also seen pieces with TSF and Calvin with the same A. That is why I think it might be Calvin Begay.

Unfortunately Calvin sold rights to the use of his name. So you will find lots of pieces with his hallmark on the back, that has actually been cast into the piece. Some manufactures in town use his hallmark and then another artist will inlay the work and put their hallmark, most likely what has happened here. Sorry I do not know the hallmarks. Thanks for sharing.