plate block (plural plate blocks)
- (philately) A block of stamps from the edge of the sheet which shows the plate from which the stamps were printed.
1997 June 18, R Sumner, “Re: Why collect new U.S.?”, in rec.collecting.stamps[1] (Usenet):I gave up plate blocks long ago, but still obtain PNC's - but only one of each issue and without regard to the particular number.
