If you could provide a bit more detail, ie location you acquired it, actual size, any known history, all info helps. My time is a bit ‘sketchy’ these next few weeks but I’d love to give it a go. (also a picture of the back is useful)
Seriously scrapter,this a forum and you don't even pay for professional art services. Why don't you adhere(label and all info) to the above post.Wagnermia is only trying too help.Btw I will not get in a back forth with you.