BLUE 'GLASGOW 159' DUPLEX ON PIECE (SPEC.C1vb)/PL.34 (SG29)(OC). Small piece with fine die 2 1d pl.34 in an attractive bright red-brown shade on blued paper (SG29) lettered OC tied fine almost complete strike GLASGOW/159 duplex in BLUE JN 17 57, apparently second day of use. (Ref 90402).