Auction 186-190

1867: Duloz unissued set - six imperforate Proofs of all values (the 5 piastre value does not exist thus), with 10 pa. green, 20 pa. orange (some aging), 1 pi. in unissued colour of brown and another in grey-lilac, 2 pi. in blue and 25 pi. in orange. A rare set.