Many of today's collectors started collecting U.S. postage stamps as kids, often with a parent or family member. The US stamp collecting market has weakened in recent years, however, with many stamps and even entire collections trading below face value (so many copies of common stamps were printed that there's not enough demand to warrant a premium).

Rare or unusual U.S. stamps, however, are another story - there's a robust market for those, and some specimens can be worth thousands of dollars or more.

There are many ways to approach collecting U.S. stamps. Some collectors focus on a specific time period, like the 19th century. Others choose specific themes like airmail stamps or duck stamps. Some focus on specific formats like sheets, plate blocks, coils, or booklets. There are also a large number of collectors who focus on first day covers - stamps that were affixed to a special envelope and cancelled on the first day of issue.

As with many collectibles, rarity and condition are two key determinants of value. U.S. stamps can be either unused (never cancelled) or used, and there are collectors who focus on both varieties.


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Us, Includes Mint Nh 572-573 , Excellent Old Mint Stamps In GlassinesUs, Airmails, C18, C1-c3 Are All Mnh, Excellent Accumulation Of Stamps In A SafeUs Washington Franklin Mint Nh Stock With 2c #519 Pfc $1 #342 Cat $40,000[16] Usa 1892 Scott#243 Used Cv:$825 **space Filler**Us 1857-61 Type Ia H 1c Sc 19 Cat $42500Us Trans-mississippi Sc # 292 1898 $1 Mint Nh Cat $3500[15] Usa 1898 Scott#292 Used Cv:$725 **space Filler**Us Imperf Sc # 1a 1847 5c Mint H Cat $8750#467 Mint Original Gum Error Strip Of 12Us,100's Of Mint(much Is Nh) Stamps, Mostly In Blocks, Housed In Stock SheetsNystamps Us Stamp # 245 Mint Og H $2500Us, 100's Of Mint Plate Blocks/blocks Hinged/mounted In 3 Albums(one Is Stock Sh[09] Usa 1855 Scott#16 Used Cv:$1,650U.s. #292 Used - 1898 $1.00 Trans-mississippi ($725)[06] Usa 1855 Scott#14 Used With Red Grid Cv:$160Us Perf 15 Sc # 39 1857-61 90c Mint Og H W Pse Cert#116 Used Light Black Fancy Cancel VfUs, Ducks, Fish & Wildlife, Others, Excellent Stamps & Others In Stock SheetsUs Stamps # 459 Fvf Og Lh Scott Value $175.00#293 Used Black Town Cancel $2 Trans-mississippiUs, Csa, Ducks &, Excellent Accumulation Of Old Stamps In Glassines & OthersUs, Errors, Freaks, Oddities & Others, Assortment Of Stamps In A Small Stock BooUs, Overrun Nations & Others, Old Accumulation Of Sheets, Multiples, & Others#278 Used Light Cancel $5 MarshallUs Parcel Post Sc # Q12 1913 $1 Mint Nh Cat $650Us Stamps # 244 Vf Og Lh Scott Value $2,000.00Us(-1964), 19th Centu, 100's Of Stamps Hinged In 2 Minkus Albums(one Is Sparse)Noblespirit No Reserve (th1) Exciting $9,000 Us Mint Treasure Trove Discovery[21] Usa 1903 Scott#313 Used Cv:$700#261 Mint Original Gum VfUs Trans-mississippi Sc # 293 1898 $2 Mint Nh Cat $6000Nystamps Us Stamp # 244 Mint With Gum H $2150U.s. #404 Choice Mint Vf/xf - 1915 10c Pan-pacific, P10 ($700)Scott #7 -- 1 Cent Benjamin Franklin Type Ii Stamp **1851*** Us Stamps # 534b F+ Og Hr Scott Value $2,000.00U.s. #291 Scarce Mint Nh W/cert - 1898 50c Trans-mississippi ($1,800)Nystamps Us Stamp # 121 Used $500Mr Fancy Cancel 206 210 205 Pair On 2c Envelop Registered San Fran To Berlin '86#312 Mint Original GumUs Stamps # 116 Xf Dist Og Strong Grill Scott Value $2,000.00Us, 100's Of Mint(much Is Nh) Stamps In Stock Sheets(included)Nystamps Us Stamp # 277 Mint Og H $950Usa Stamp #388 2c Carmine 1910 Single Line Usps Wmk Mnh/og Pasteup Stip Of 4Us Columbian Sc # 243a 1893 $3 Mint Nh Cat $4750Us Parcel Post Sc # Q10 1913 50c Mint Nh Cat $600Us Scott #39, Unused.[07] Usa 1895 Scott#278 Used Cv:$625#278 Used $5 Marshall[07] Usa 1851-57 One Cent Blue Franklin Imperforated **see Pictures**Us Panama-pacific, Perf 10 Sc # 404 1914-15 10c Mint Nh Cat $1700Nystamps Us Air Mail Stamp # C15 Mint Og H $575Nystamps Us Stamp # 241 Mint Og H $1100[36] Usa 1861 Scott#72b Mint No Gum Dark Blue Cv:$1,600 **nice Centering**Us Stamps # 312 Vf Used Very Light Cancel Deep Color Scott Value $200.00Ckstamps: Us Stamps Scott#519 2c Washington Mint Lh Og Stain On Gum Cv$400U.s. #524 Mint Vf - $5.00 Green & Black ($170)Philippines, Excellent Stamps In Remainder Stock Book PagesUs, Incl Revenues, Airs, 1500+ Used Stamps In Stock Sheets(binder Not Included)Us, C1-c3, 1918 Curtiss Jenny Issue, Mint Stamps In A Specialty Folio By PcsNystamps Us Stamp # 261a Used $825