Did you check the size limit for this site ?? Its right beside the “upload files ” when you post pics !! 2 MB is the max. size per pic !! Divide that amount if more than one pic !! I looked at the link but the mark is unreadable !! Try looking at the pics yourself !!
I can tell you that this vase is likely studio made and as such would be almost impossible to determine the potter that made it !! There is no known list or register for studio potters and anyone that chooses to can just hang his shingle and start making pottery!! Very few are well known enough that people buy the pots and wares that they produce !! If you found this vase in your town then its best to start looking locally !!