I found this miniature oil painting at a second hand store for $1.50 in with their small frames. It is dated 1749. I was wondering if this is Colonial American (Ohio valley, upper PA, NY, or Hudson River area) or European? It is in an oval frame under glass, signed and approx 4 1/2" W and 3 1/2 " H. The substance around the wood frame is called gesso which I understand was popular in the 18th century.