I described this as Aesthetic Movement - Art Deco, I could not decide which it felt more like

I would lean towards Aesthetic Movement - However I cannot rule out Art Deco, it is very unusual and Striking

The exterior Frame dimensions are 18 3/8" by 15 3/8" by 1"

The Frame Fits 13 1/2" by 10 1/2" , the actual rabbet dimensions are 13 7/8 by 10 15/16"

So I suppose you could also say the firt is 14" by 11" but it is just shy of that

The visible front opening of the frame is 13 3/8" by 10 3/8"

The frame molding is 2 1/2" Wide when viewed from the front

There is loss to the gesso decoration on all 4 corners and small bits of loss around the interior edge - This is not unexpected with a frame with this type of decoration and it displays beautifully - Again, very striking and unusual

There is no glass included

see photos