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DGTI would suggest making a post on the PSA set registry boards and the LTS board (e-mail me and I'll post a link over there)...also, there is a fairly major hockey dealer in Montreal named Gerry Chartrand (good guy as far as my dealing have been), his son does baseball stuff as well, I would contact them and ask they keep an eye out and ask if there are other local dealers a thief might turn to.
here is their web-site:
www.gerryssportscards.com