The stamp unit and the base member further have {HEAD ~ interengaging means} to lock or latch {TAIL ~ each stamp unit} in a position in which the printing surface of said stamp unit is in level with the printing surface of the fixed stamp 
to latch
The stamp unit and the base member further have { HEAD ~ interengaging means } to lock or latch { TAIL ~ each stamp unit } in a position in which the printing surface of said stamp unit is in level with the printing surface of the fixed stamp
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH