Lot 615 P
Mexico, 1911 "Conservemos la Especie" Unissued Proofs, three rare items with "PRUEBA" printed on the back; imperforate sheet with all 6 designs, an imperf sheet with rows of 7 stamps with all 6 designs and the same sheet rouletted, Very Fine.Estimate $150 - 200.
Realized: $180