"Stencil drums" were Japanese copies of major drum manufacturers like Slingerland and Rogers that were created in the 50's to the 80's. They feature some of the most unique finishes that you can find and have become a unique category of affordable collectors drums. They have a somewhat mysterious history, but fortunately Marc Patch has written a book documenting the history of MIJ (Made In Japan) drums and took the time to talk with me.