mark ID please

[bubba]

I would be pleased if these two pieces with the same mark could have the maker identified. TIA

[Aguest]

I think it’s from Greece, the owl is the Athens Owl seen on ancient silver coins from Ancient Greece, and the maker’s Mark seems to have something to do with Archimedes golden mean formula, the circle with the square around it with the angle measurement inside....

Greece is always difficult to figure out the maker ::::