5c blue green 'Transitorio' issue DIE PROOF on white card produced by George W. Linn as a souvenir to be given out at the 1914 APS meeting in Niagara Falls, New York, numbered '26' from an edition of 300. (Ingham #55)
5c blue green 'Transitorio' issue DIE PROOF on white card produced by George W. Linn as a souvenir to be given out at the 1914 APS meeting in Niagara Falls, New York, numbered '26' from an edition of 300. (Ingham #55)