Proof 1973-79 die proofs with 1973 Olomouc Flower Show "Tulip" , 60h. in yellow-green, blue-green and scarlet on glazed card (75x112mm), 1976 Wildlife 60h. Black Rhinocerous and 1979 Historic Bicycles 60h. showing Penny-Farthing and tricycle; each signed in pencil by the designer, fine. (3)