✅ SOLVED sterling attachment?

[okerraine]

Found in front yard area of 1850's home. It was 6 inches down its marked sterling and has 6 holes with removable prongs were. Saved a couple that fell out. It's 2 inches by 1 thanks for any input..

 

[nhbenz]

Corner trim off of a wooden jewelry box (or wooden box of similar size) would be my guess.
I think the "removable prongs" are brads (small nails).

 

[okerraine]

Thank you! That Make perfect sense.