another antique mirror

This one's really cool IMHO, though I know nothing exact about it. About 14"w x 29" tall, the frame is a dark colored thing with fancy applique-ish decoration (not carving) especially on its top, where a few bits are chipped off. The mirror itself is what's special-ish (again unique, IMHO) because it has an etched/engraved pattern (also hard to photograph) of square/rectangular 'windowpanes' all the way around its perimeter. There isn't any evidence of hardware on its edges or back to suggest it was once part of another larger piece of furniture.

I'll guess late 1800's to 1920's just because that seems logical -- if anybody else recognizes anything about it PLEASE leave me a comment to 'splain...???!!! :-) :-) :-) :-) :-)