Kavel 1819

U.S.A., CUT SQUARES AND ENTIRES, collection of mainly mint ex. of great value with certificates, this collection includes Air Post and Officials, also a plate proof collection(Postage Due and Officials included), most important are U numbers 11, 13, 23, 24, 42, 43, 44, 45, 51, 66, 90, 98, 107, 195, 200, 206, 226, 244, 249(!), 2185, 286, 474, 475, 476, 479, 503 and many others. Proofs mostly on card e.g. 3P., 70P, 156P, 161P, J22-J28P, O10-O24P, O47-O93P and many others, in Scott album