Someone told me this is a "reverse" painting done on glass, then framed. My mother acquired it about 25 years ago at an estate sale. I believe she paid over $100 at that time (would be over $200 in today's money). I have an interested buyer and when I told him what was paid for it, he blew air, rolled his eyes and exclaimed, "She really over-paid!" He offered be $25 which I refused. I think the ornate gilded wood frame is even worth a piece of change. It's fairly large (approx. 27 x 31" - outer frame). What would be a fair market value?