hi - welcome to the GMB - sorry to hear you're having problems uploading your pix. The maximum size of image will be 700 on the largest dimension - would imagine you'll need a resizing programme of some sort in order to reduce what was presumably something a lot bigger initially, from your camera. We do have techy helps and hints, and if you go to BOARD INFORMATION and run down to TECHIE TIPS - RESIZING IMAGES TO FIT THE BOARD, hopefully this will help - if not them believe you might try sending your full size pix to one of the Mods. and am sure they will be able to help
Regret we can do nothing to help with the provenance of your vase, or the signature, without see some sort of pictures. Wish you success with resizing.
