Describe what you collect in ordinary language, or search by country, date, Stanley Gibbons reference, description and classification.
Perforation-assisted identificationAlready know the stamp, country or SG reference? Add its measured perforation to narrow possible catalogue matches and help distinguish perforation varieties.Try UPA’s Digital Perf Reader ↗
Save interesting lots as you browse this catalogue.
21,466
lots found UPA103
Catalogue closes October 6, 2026
Lot 19177
Sudan C
Imperial Airways Christmas FFC KHARTOUM to CAPE TOWN with Air 4½pi red brown and grey tied 14 XII 31 Air Mail postmark
Date
1931
Lot 19178
Sudan C
Imperial Airways Christmas FFC KHARTOUM to CAPE TOWN with Air 15m,2p tied 14 XII 31 pmk, boxed 'T' mark but no Postage Due applied
Date
1931
Lot 19179
Sudan C
Imperial Airways cover Khartoum to Malakal, redirected to Khartoum with Air 10m pair, fine
Philatelic terms
pair — Pair
Two stamps that remain joined together.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931
Lot 19180
Sudan C
Imperial Airways FFC Christmas flight MALAKAL to MBEYA, Tanganyika with Air 10m,2p tied 14 XII 31 pmk
Date
1931
Lot 19181
Sudan C
Imperial Airways FFC Christmas flight JUBA to CAPE TOWN with Air 4½p red brown and grey tied 16 XII 31 pmk, violet cachet
Date
1931
Lot 19182
Sudan C
Imperial Airways FFC Christmas flight JUBA to MPIKA, Northern Rhodesia with Air 4½p red brown and grey tied 16 XII 31 pmk, violet cachet
Date
1931
Lot 19183
Sudan C
Imperial Airways FFC Christmas flight MALAKAL to CAPE Town with Air 4½p red brown and grey tied 14 XII 31 pmk, First Flight cachet
Date
1931
Lot 19184
Sudan C
FFC Christmas Flight KHARTOUM to KOSTI with Air 2pi tied 14 XII 31 pmk, Kosti backstamp
Date
1931
Lot 19185
Sudan C
FFC Christmas Flight KHARTOUM to MALAKAL with Air 10m black and carmine horiz pair tied 15 XII 31 pmks
Philatelic terms
pair — Pair
Two stamps that remain joined together.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931
Lot 19186
Sudan C
FFC Christmas Flight KHARTOUM to JUBA with Air 5m black and green(4) tied 14 XII 31 pmks, Juba backstamp
Date
1931
Lot 19187
Sudan C
Regd Air Mail cover Khartoum to England with Air 5m(3),10m,2p, fine
Philatelic terms
SG — Stanley Gibbons
The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931
SG
47-49
Lot 19188
Sudan C
Air Mail 10m,2p pairs on cover tied Khartoum pmk 14 FEB 31, day before issue, to London endorsed 'N ot by air mail, fine
Philatelic terms
SG — Stanley Gibbons
The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
SG value — Stanley Gibbons catalogue value
The catalogue value quoted from Stanley Gibbons. It is not the same as the UPA auction estimate or a guaranteed selling price.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931
SG
48,49
SG value
£76.00
UPA
Lot 19189
Sudan MH
AIR: Full set of 12v, 3m to 10p, wmk SG (w7), perf 14. Mint with h/r.
Philatelic terms
SG — Stanley Gibbons
The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
SG value — Stanley Gibbons catalogue value
The catalogue value quoted from Stanley Gibbons. It is not the same as the UPA auction estimate or a guaranteed selling price.
perf — Perforation
The rows of holes or cuts between stamps that allow them to be separated; measurements describe the spacing of those perforations.
wmk — Watermark
An abbreviation for watermark: a design or pattern incorporated into the stamp paper during manufacture.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931-37
SG
49b-57d
SG value
£50.00
UPA
Lot 19190
Sudan MH
Air set perf 14 & perf 11½x12½ set fine looking m.m. with some h/r & overall toned gum.(20).
Philatelic terms
SG — Stanley Gibbons
The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
SG value — Stanley Gibbons catalogue value
The catalogue value quoted from Stanley Gibbons. It is not the same as the UPA auction estimate or a guaranteed selling price.
perf — Perforation
The rows of holes or cuts between stamps that allow them to be separated; measurements describe the spacing of those perforations.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931-37
SG
49b-57e
SG value
£95.00
UPA
Lot 19191
Sudan MH
Air set perf 14 & perf 11½x12½ set m.m. with some h/r. 10p SG57e tone mark showing through. Incls 2½p shade aniline magenta. (21).
Philatelic terms
SG — Stanley Gibbons
The Stanley Gibbons catalogue reference used to identify and catalogue stamps.
SG value — Stanley Gibbons catalogue value
The catalogue value quoted from Stanley Gibbons. It is not the same as the UPA auction estimate or a guaranteed selling price.
perf — Perforation
The rows of holes or cuts between stamps that allow them to be separated; measurements describe the spacing of those perforations.
General philatelic guidance — separate from the UPA catalogue description.
Date
1931-37
SG
49b-57e
SG value
£100.00
Lot 19192
Sudan C
Air Mail 5m,10m on cover Khartoum to Atbara, fine
Date
1932
Lot 19193
Sudan C
First Flight Cover Atbara to Khartoum with Air 10m black and carmine pair, fine
Philatelic terms
pair — Pair
Two stamps that remain joined together.
General philatelic guidance — separate from the UPA catalogue description.
Date
1932
Lot 19194
Sudan C
First Flight Cover England to Cape Town with Egypt Air 27m brown tied Cairo 21 JA 32 pmk, to Atbara, Sudan with 25 JAN Sudan Air Mail/Atbara backstamp
Date
1932
Lot 19195
Sudan C
Imperial Airways First Flight cover to Cape Town with Air 4½pi red brown and grey tied by Khartoum 22 1 32 pmk, fine
Date
1932
Lot 19196
Sudan C
Imperial Airways First Flight Cover Khartoum to Cape Town with Air 10m,15m,2pi tied Sudan Air Mail 25 1 32 pmks, fine
Date
1932
Lot 19197
Sudan C
First Flight Cover to CAPE TOWN with Air 4½pi red brown and grey tied JUBA 26 1 32 Air Mail postmark
Date
1932
Lot 19198
Sudan C
Air Mail cover Juba to London with Camel 10m,2p
Date
1932
Lot 19199
Sudan C
Imperial Airways FFC UPINGTON to WADI HALFA via Khartoum with S.Africa Air 4d green pair
Philatelic terms
pair — Pair
Two stamps that remain joined together.
General philatelic guidance — separate from the UPA catalogue description.
Date
1932
Lot 19200
Sudan C
Imperial Airways FFC WADI HALFA to CAPE TOWN with Air 5m,10m,3p tied 24 1 32 pmks