ABOUT THE DESIGN:
The Owl design was first tattooed around the early 40's and usually meant that that the wearer was a burglar or a safe-cracker, hence the crowbar and keys. Owls are also creatures of the night which also relates to the wearers of these tattoos.
Each T-shirt also has the "MIR" logo on the back. "MIR" is the Russian word for "peace", but in the criminal world it's an acronym that stands for "Menya Ispravit Rastrel" which translates roughly to "Execution will Reform Me".