Help with mark

[rgomes10]

Hello!
Please, what about this mark? Can someone read it, please?
Thank you very much,
Regina

[peterp]

文章山斗  (wenzhang shandou) appears to be a private mark. Please be careful, it seems to appear on brush pots that contain lots of writing. Many of those are imitations (fakes). One of the verifications used for age is looking at the characters to check if there are any simplified ones mixed in. when they fake them in China sometimes they inadvertently use simplified instead of traditional characters.