I have a watercolor that was done by Gladys Nilsson. I am unsure of the date. It says that it is part of the Vincent Price Collection (tagged on back) and it has Vincent Price's signature. It is in good condition. It was stored for years and I recently hung it. It has a few watermarks on the back of the framing (as you can see in the pictures). I am wondering what the value of this watercolor is. Thank you for any information.
