Vintage early 1900 oval 24k gold gild ornate rim picture frame with convex glass

This is an extremely rare, vintage to me (antique to another) very intriguing oval shape (guaranteed) 24k gold plated filigree picture frame with the original convex or eventually negative-meniscus lens type glass from the early part of the 1900 that I have kept in my possession for quite some time. The frame contains an image of a wise lady most probably as provided by the manufacturer, based on few observations I’ve always had. The image is printed on a sheet of paper it’s not a picture, the image is mechanically cut to size.The frame has 4 small pins/pegs/nails about 1cm long used to fasten the velvet covered back side to the frame, typical for frames of the 1880-1950sh period. These pins are easily pulled with a finger nail. I myself have seen frames from the 1920-40 belonging to my grandparents that were fastened in the exact same way.The frame is gilded in 24k gold and it looks outstanding, frankly I still debate with my other self if I should offer it for sale… so make your mind quickly because I may change mine again and you will need to find it elsewhere then, or make me rich ;)The most unique though is the original glass in convex shape it could eventually be negative miniscus to bring the focal point I know it’s a shame on me, but I don’t have the original packaging i know it had one howeverI have spent quite some time trying to figure out who did manufacture these frames and when exactly I will appreciate if anyone can provide any detail. Thanks