1946, Postal Museum Inauguration, the special presentation folder with both single (10) and collective (2) Deluxe proofs from 1939 (Mi 461) and 1946 (Mi 746), in adopted and rejected colours, the collective proofs both in small and large formats, together with two imperforate sheets of the adhesives, some occasional toning spots only on the booklet and its pages, otherwise all stamps and proofs fine to very fine, very rare