I think if you ask they should "dig it up" and 
remove it for you. LOL If people are keeping 
track of their collecting habits it does not 
have to be on a public gallery. I think the 
Rubberslug rules say you have to have the cel in 
hand to display it, but I could be wrong :/. 
Most people want to get along so I bet they will 
remove it for you :).