Mi.No. 53, trial print in blue color, block of 6 on grey-yellow paper. Description: Mi.No. 53, trial print in blue color, block of 6 on grey-yellow paper. Very rare. Described in Vilfan page 88/92. Mi.No. 53, trial print in blue color, block of 6 on grey-yellow paper. Auction: Aukcija br. 48 - Filatelija i razglednice Catalog No: 136 Category: SHS Croatia Quality: (*) Current offer is at 190EUR. In order to place your bid your offer needs to be at least 190EUR or higher. Please place your bid: Other items from the category: SHS Croatia **/*/⦿ 228 35 EUR 229 30 EUR ←345678