I have two numbered Hummel prints, limited additions of 999 copies each. They were bought in Germany around 1990 and were authorized from original drawings owed by the sisters. I have the original certificates of authenticity and they came framed. Does anyone know anything more about these?[attachment]IMG_2623.jpg[/attachment][attachment]IMG_2622.jpg[/attachment][attachment]IMG_2621.jpg[/attachment]