I am Jean, the person who each night pastes stamps on all the plaques in the casino to ensure all pieces in use are accounted for and pass security inspection. Then, the following evening, I scrub off the stamps with soap and hot water and paste on new stamps. I keep telling my boss that this is not good for the plaques; too abusive, and will damage them... and collectors in the future will not be happy with the way the plaques look -- all dried out, cracking and warping... but he does not listen to me.