Stamps of Guyana, 5 base month
251 to 300 of 641
postage
1990, May 3 150th Anniversary of the Penny Black / 500th Anniversary of Thurn and Taxis Postal Service issue unwmk p. 14.25 (48 stamps)
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $15.30 | multi | ||||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | "Arctic" - 1850 | |||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | ||||
| - | $17.80 | multi | ||||
| - | $20 | multi | ||||
| - | $20 | multi | ||||
| - | $20 | multi | "The American Express" | |||
| - | $20 | multi | "Graf Zeppelin" | |||
| - | $20 | multi | Dornier Do-R 2 "Colombia" - 1925 | |||
| - | $20 | multi | Short S-8 "Calcutta" | |||
| - | $20 | multi | Junkers JU-52/3m | |||
| - | $20 | multi | Douglas M-2 | |||
| - | $20 | multi | De Havilland DH-4 | |||
| - | $20 | multi | ||||
| - | $20 | multi | ||||
| - | $20 | multi | ||||
| - | $20 | multi | Westland-Sikorsky S-51 | |||
| - | $20 | multi | ||||
| - | $20 | multi | Boeing Model 314 Yankee Clipper | |||
| - | $20 | multi | Boeing 747 of Pan Am | |||
| - | $20 | multi | Concorde 102G of British Airways | |||
| - | $20 | multi | ||||
| - | $150 | multi | — | — | ||
| - | $150 | multi | — | — | ||
| - | $150 | multi | — | — |
1990, May 8 9th Conference of Rotary District 405, Georgetown issue p. 13.75
| - | 80c | multi | ++on=55c | .20 | .20 | |
| - | 80c | multi | ++on=55c | .20 | .20 |
251 to 300 of 641