British Honduras – 1882-87 Queen Victoria 6d and 1s issues, group of 12 items including 6p and 1s master negatives on film with painted surround to avoid the light to diffuse laterally, the 6d design also retouched by Sperati showing incredible attention to the smallest detail, four glass support clichés of the 6d value, one in yellow dated 2/38, one in pale-vermilion dated 8/44 with the notations « a » 3 minutes 30 seconds exposure to light, one in orange-red dated 2/45, and three glass clichés of the 1sh in black and grey-black, the former dated 2/35, one in orange dated 4/38 with the notation 18°C temperature with 5% of a substance at 2 minutes 30 seconds exposure to light, also two clichés on celluloid of the 6d and a hand signed final reproduction of the same value; an incredible selection of working clichés with two master negatives which are the basis of the clichés for these two values, a unique assembly including the 1s not previously seen as a finished reproduction, with this lot also containing its unique key item: the master negative; the « Ultimate » collection had one stamp and two pmk clichés documented; with regards to matrices or clichés, the B.P.A. Sperati I only documents a negative but for the « A06 » cancellation.