Sweden. Facit 6Aa used, (1 skill) grey-black-greyish black to black on thin paper. Cancelled with the very scarce star pmk TYPE I. The upper left corner became bent upwards when used for franking on the letter, why a small portion of the cancel is found on the reverse. Only known in about 10 examples. EXHIBITION item. Certificate NS 3–4, 3–4, 4–5 (1984) and M. Nilsson 3–4, 3, 4 (2025). Ex. Contenta.