Artifact Details Title Circuit board Catalog Number 102662113 Type Physical object Identifying Numbers Model number 67818 On circuit side of PCB Dimensions overall: 1 1/4 in x 3 1/2 in x 7 in Description Object is a PCB with a power transistor and assorted resistors, capacitors, a trim pot, a fuse. Written on box in which it was found is "PRINT HAMMER DRIVE CIRCUITS FROM OLD RCA DRUM LINE PRINTER". Category Component/circuit board