Staffa 1986 Royal Wedding imperf souvenir sheet (£1 value) single progressive proof in blue, magenta & black (yellow omitted) unmounted mint (note the remaining progressive proofs were damaged by water at the printers)
Staffa 1986 Royal Wedding imperf souvenir sheet (£1 value) single progressive proof in blue, magenta & black (yellow omitted) unmounted mint (note the remaining progressive proofs were damaged by water at the printers)