When I recently got this recently warmer, although it was with other antique items, I assumed it was a mid 20thC Reproduction. But on closer inspection it appears to be Old Sheffield Plate, with silver layers wrapped around the edges? It has a heavy copper base and the only makers marks I can see is the Hand/Palm motif in a rectangle, plus what looks like a sun (on the handle) and an Eye above one of the logos.
My initial research makes me wonder if it’s by Padley, Parkin & Staniforth or William Padley & Sons… but they both appear to usually include their initials and aren’t early enough for OSP? I did find a reference to John Watson & Sons using the Palm logo from 1830 (until it was acquired by PP&S in 1849), but can’t find any visual proof of this.
Can anyone please help me solve this mystery… is it OSP and who made it??