http://www.stampcollectioninfo.com/stamp-specimen/
what does specimen on stamps mean?
I think that it means that the stamps are for display purposes to show people the design and are not intended to be sold or used for postage.
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 O66S STATE DEPT 30 SPECIMEN OVPT W SHORT PERFS ONLY 249 ISS CV 600 BN6133 $199.00 Time Remaining: 4h 15m Buy It Now for only: $199.00 |
 J38SE J41SE TYPE E SPECIMEN VF HINGED CV 22500 BN6173 $199.00 Time Remaining: 5h 1m Buy It Now for only: $199.00 |
 J20SD XF SUPERB SPECIMEN UNUSED BN6194 $45.00 Time Remaining: 5h 30m Buy It Now for only: $45.00 |
 O63S STATE DEPT 12 SPECIMEN VF ONLY 280 ISSUED CV 55000 HV361 $450.00 Time Remaining: 7h 13m Buy It Now for only: $450.00 |
 O62S STATE DEPT 10 SPECIMEN VF+ W TRIMMD PERF TL 346 ISSUED CV 550 HV363 $425.00 Time Remaining: 7h 13m Buy It Now for only: $425.00 |
 J1SE XF OG DISTURBED GUM UNLISTED SPECIMEN HV377 $750.00 Time Remaining: 7h 34m Buy It Now for only: $750.00 |
 O64S STATE DEPT 15 SPECIMEN OVERPRINT VF ONLY 257 ISSUED CV 60000 HV378 $499.00 Time Remaining: 7h 35m Buy It Now for only: $499.00 |
 O40S VF+ NAVY DEPT 10 SPECIMEN OVPT 1875 SPEC PRNTNG 112 EXIST CV1400 HV380 $799.00 Time Remaining: 7h 39m Buy It Now for only: $799.00 |
 J38S J44SE VF COMPLETE SET TYPE E SPECIMEN ALL HINGE CV 59500 HV397 $499.00 Time Remaining: 8h 39m Buy It Now for only: $499.00 |
 O57S O61S STATE DEPT SPECIMEN CARMINE OVERPRINT CV 75250 HV400 $499.00 Time Remaining: 8h 44m Buy It Now for only: $499.00 |
 ASSs US O35S Navy Dept Specimen CV3500 O766 $25.50 Time Remaining: 9h 8m Buy It Now for only: $25.50 |
 ASSs US O47S Post Office Specimen CV4500 O764 $29.75 Time Remaining: 9h 8m Buy It Now for only: $29.75 |
 UX17S FULL FACE MCKINLEY SPECIMEN DIE PROOF VERY RARE CV 350000 HV416 $2,999.00 Time Remaining: 9h 47m Buy It Now for only: $2,999.00 |
 1892 US U350 Columbian Envelope SPECIMEN VG to F $18.99 Time Remaining: 11h 19m |
 HAWAII 75 SPECIMEN MISSPELLED SPCEIMEN VERY RARE $1,500.00 Time Remaining: 13h 2m Buy It Now for only: $1,500.00 |
 Legacy US Scott 210 fancy cancel specimen Kicking Mule Cancel with Certif $99.95 Time Remaining: 15h 38m Buy It Now for only: $99.95 |
 J17S J21SD TYPE D SPECIMEN ALL HINGED CV 22500 BN6229 $125.00 Time Remaining: 16h 30m Buy It Now for only: $125.00 |
 SCOTT 285S MH AVG SPECIMEN Lot EU18226 7 $19.99 Time Remaining: 17h 10m |
 Scott O25 c Official Specimen w Small i Variety PF Cert Stock O25S 14 $385.00 Time Remaining: 1d 1h 35m Buy It Now for only: $385.00 |
 Scott O10S b Official Specimen w Small i Variety Stock O10S 19 $399.95 Time Remaining: 1d 1h 38m Buy It Now for only: $399.95 |
 Scott O57S c Official Specimen w Small i Variety Stock O57S 14 $525.00 Time Remaining: 1d 1h 40m Buy It Now for only: $525.00 |
 Scott O83S Official SEPCIMEN Error Specimen Stamp Stock O83S 13 $2,150.00 Time Remaining: 1d 1h 45m Buy It Now for only: $2,150.00 |
 Scott O39S Official Specimen Unused Stamp StockO39S 3 $399.75 Time Remaining: 1d 1h 47m Buy It Now for only: $399.75 |
 Scott O60S Official Specimen Unused Stamp StockO60 5 $185.00 Time Remaining: 1d 1h 50m Buy It Now for only: $185.00 |
 Scott O60S Official Specimen Unused Stamp Stock O60 7 $299.75 Time Remaining: 1d 1h 53m Buy It Now for only: $299.75 |
 Scott O61S Official Specimen Unused Stamp Stock O61 1 $105.00 Time Remaining: 1d 1h 54m Buy It Now for only: $105.00 |
 Scott O62S Official Specimen Unused Stamp Stock O62S 6 $539.75 Time Remaining: 1d 1h 56m Buy It Now for only: $539.75 |
 Scott O16S Official Specimen Unused Stamp Stock O16 7 $89.75 Time Remaining: 1d 2h 50m Buy It Now for only: $89.75 |
 Scott O84S Official Specimen Unused Stamp Stock O84 4 $80.00 Time Remaining: 1d 2h 51m Buy It Now for only: $80.00 |
 Scott O11S Official Specimen Pre Printing Crease Stock O11 18 $185.00 Time Remaining: 1d 3h Buy It Now for only: $185.00 |
 Scott O11S Official Specimen Pre Printing Crease Stock O11 19 $185.00 Time Remaining: 1d 3h 26m Buy It Now for only: $185.00 |
 Scott O58S Official Specimen Unused Stamp Stock O58 5 $60.00 Time Remaining: 1d 3h 36m Buy It Now for only: $60.00 |
 Scott O58S Official Specimen Unused Stamp Stock O58 6 $60.00 Time Remaining: 1d 3h 37m Buy It Now for only: $60.00 |
 Scott O58S Official Specimen Unused Stamp Stock O58 8 $95.00 Time Remaining: 1d 3h 39m Buy It Now for only: $95.00 |
 Scott O58S Official Specimen Unused Stamp Stock O58 7 $165.00 Time Remaining: 1d 3h 40m Buy It Now for only: $165.00 |
 Scott O58S Official Specimen Unused Stamp Stock O58 9 $45.00 Time Remaining: 1d 3h 42m Buy It Now for only: $45.00 |
 Scott O58S Official Specimen Unused Stamp Stock O58 10 $56.75 Time Remaining: 1d 3h 44m Buy It Now for only: $56.75 |
 Scott O72S Official Specimen Unused Stamp Stock O72 6 $70.00 Time Remaining: 1d 3h 47m Buy It Now for only: $70.00 |
 Scott O72S Official Specimen Unused Stamp Stock O72 7 $50.00 Time Remaining: 1d 3h 48m Buy It Now for only: $50.00 |
 Scott O72S Official Specimen Unused Stamp Stock O72 8 $135.00 Time Remaining: 1d 3h 50m Buy It Now for only: $135.00 |
 PHILIPPINES 217S FINE OG LH SPECIMEN RARE $250.00 Time Remaining: 1d 10h 33m Buy It Now for only: $250.00 |
 238S B Mint 15c VF XF OG VLH SPECIMEN OVERPRINT $300.00 Time Remaining: 1d 12h 11m Buy It Now for only: $300.00 |
 EXPERIMENT 1 8 SPECIMEN STAMPS BL3505 $750.00 Time Remaining: 1d 15h 5m Buy It Now for only: $750.00 |
 Scott O1S Official Specimen Unused Stamp Stock O1 13 $30.00 Time Remaining: 1d 15h 16m Buy It Now for only: $30.00 |
 Scott O1S Official Specimen Unused Stamp Stock O1 14 $55.00 Time Remaining: 1d 15h 17m Buy It Now for only: $55.00 |
 Scott O1S Official Specimen Unused Stamp Stock O1 15 $30.00 Time Remaining: 1d 15h 18m Buy It Now for only: $30.00 |
 Scott O1S b Official Specimen Unused Stamp Stock O1 16 $30.00 Time Remaining: 1d 15h 19m Buy It Now for only: $30.00 |
 Scott O2S Official Specimen Unused Stamp Stock O2 3 $48.50 Time Remaining: 1d 15h 23m Buy It Now for only: $48.50 |
 Scott O2S Official Specimen Unused Stamp Stock O2 4 $48.50 Time Remaining: 1d 15h 24m Buy It Now for only: $48.50 |
 Scott O2S Official Specimen Unused Stamp Stock O2 5 $35.00 Time Remaining: 1d 15h 25m Buy It Now for only: $35.00 |