Hello and welcome! My name is Doris.I have been an antiques collector, dealer and appraiser for over 56 years.I will be pleased to help you.
Please send a photo of the signature.
You may need to use the macro function (flower icon) of your camera to get a good clear photo of the signature.
To send photos you may use the "reply to expert" or "add files" in the blue box link on your reply page or the "paper clip" found in the toolbar you see on your reply page.Please do not send in ZIP format. The jpg or jpeg format works best.
An explanation of this method can be found here:
I found a German artist named W Beilich. That's why I asked for a photo.
Could the signature read W. and not N?