1941, Cyphers, specialised assortment of 37 stamps showing specialities like imperfs, partly imperf, offset, incomplete design caused by debris. Michel nos. 6/8. (Image)

1941, Overprints, specialised assortment of 23 stamps showing specialities like shifted/mutilated/double overprints, offset. Michel nos. 1, 2, 4.

1942/1944, Cyphers, specialised assortment of apprx. 360 stamps showing specialities like imperfs, partly imperf, progressive printing, colour trials, proofs, paper fold. Michel nos. 11/25. (Image)