Things You'll Need
Instructions
Examine the stamps, taking care not to touch them with your fingers. Using the stamp tongs (tweezers), separate the stamps into two groups: canceled and unused. Place the used stamps in one or more of the glassine envelopes and put them aside for now.
Examine the unused stamps, paying particular attention to gum on the back. Stamps with full gum should be separated from those with traces of gum missing. Missing gum usually indicates that the stamp was previously hinged and placed in a collector's stamp album. Place the stamps in one or more glassine envelopes for continued examination.
Examine the used stamps. Those with heavy or smudged cancels, torn corners or missing perforations should be separated into additional glassine envelopes. Again, even though the stamps are damaged, do not touch them with your fingers; use your stamp tongs. As you continue separating the stamps, label the glassine envelopes with a description of their contents.
Return to the unused stamps. Using your stamp catalog, determine the year of issue and the current catalog value. The value of unused Royal Mail stamps will be a product of their age, quantity issued, face value, and condition. Unhinged examples will be worth more than hinged copies, and complete booklet panes will be worth more than panes missing one or more stamps. As you determine the potential value of the stamps, place them in individual glassines, labeling each with the catalog number.
Continue examining the unused stamps. For those with a catalog value close to their face value, using them as postage might be a good option. The Royal Mail website has information concerning current postal rates. If you have higher-value unused stamps and are not a collector, you may want to contact a stamp dealer and offer to sell the copies to them. Many dealers have listings in the telephone directory, Internet sites, or periodic ads in newspapers.
Re-examine the used stamps. You may want to sell those with a higher catalog value to a dealer else to mount them in your own collection. Some used stamps, such as the 1929 £1 PUC (Postal Union Congress) George V stamp, may be worth almost as much in used condition as new. This is because used copies are somewhat rare and are sometimes highly prized by collectors of postal history.
Re-examine the heavily canceled or damaged stamps. If they are difficult to catalog because of the heavy cancellation or badly damaged, you may be forced to discard them. However, if you are a collector and they are stamps you don't currently own, you could keep them as "space fillers" until you acquire better copies.
Continue examining the used stamps. If some are duplicates of stamps you already own, you might contact fellow stamp collectors and try to trade for some that they have and you need.