



I had to look it up! It basically means the first stamps printed from a plate. I know in some cases these sheets are saved and labeled but how would you know if this wasn't done?
EDIT: I know they would have nice crisp images but unless they were marked somehow or had provenance from the original owner as in some kind of documentation it would be impossible to tell. Which makes me wonder, if you bought a stamp with a document saying the stamp was an imprimatur copy would you be able to accept that as proof? Unless of course some collector had it notarized somehow. Does any catalogue give prices for material like this? I must have a look through Scott's and Stanley Gibbons!
EDIT #2: There are many listed on E-Bay but the few I checked out just seem to be crisp copies. That doesn't seem to be enough IMHO!
From an auction of a supposedly serious collector.
I've only seen "imprimatur stamps" relating to Queen Victoria Great Britain stamps up to the surface printed issues with plate numbers.
SG's Specialised Great Britain Queen Victoria lists the stamps known to have been removed from those imprimatur sheets which still exist.
As an example, opening my old catalogue at random, SG lists for plate 24 of the imperf 1d red stamps (the design with corner letters in the bottom corners only), that stamps with the following corner letters have been removed:
AA to AL, FK, FL, GG to GL, HL and TL
In other words, for this single imprimatur sheet, the complete first row has been removed (12 stamps), along with the last two stamps in the sixth row, the last six stamps from the seventh row, the last stamp from the eighth row and the last stamp from the bottom (20th) row, i.e. 22 stamps in total.
I should add that this SG catalogue does give prices but this catalogue isn't updated very often and my edition is from 1977!
This catalogue has now been split into two parts and the GB QV line engraved stamps are listed in the SG Great Britain Specialised Volume 1 Queen Victoria Part 1 which covers the line engraved stamps only.
I believe this was published in 2020 based on its SG part number and I would expect this to have estimated prices for imprimatur stamps from this period.

I saw a few British Commonwealth stamps describing them as Imprimatur. I know what it means, but are they more valuable? If so, how would you ID them?
re: Imprimatur stamps
I had to look it up! It basically means the first stamps printed from a plate. I know in some cases these sheets are saved and labeled but how would you know if this wasn't done?
EDIT: I know they would have nice crisp images but unless they were marked somehow or had provenance from the original owner as in some kind of documentation it would be impossible to tell. Which makes me wonder, if you bought a stamp with a document saying the stamp was an imprimatur copy would you be able to accept that as proof? Unless of course some collector had it notarized somehow. Does any catalogue give prices for material like this? I must have a look through Scott's and Stanley Gibbons!
EDIT #2: There are many listed on E-Bay but the few I checked out just seem to be crisp copies. That doesn't seem to be enough IMHO!

re: Imprimatur stamps
From an auction of a supposedly serious collector.

re: Imprimatur stamps
I've only seen "imprimatur stamps" relating to Queen Victoria Great Britain stamps up to the surface printed issues with plate numbers.
SG's Specialised Great Britain Queen Victoria lists the stamps known to have been removed from those imprimatur sheets which still exist.
As an example, opening my old catalogue at random, SG lists for plate 24 of the imperf 1d red stamps (the design with corner letters in the bottom corners only), that stamps with the following corner letters have been removed:
AA to AL, FK, FL, GG to GL, HL and TL
In other words, for this single imprimatur sheet, the complete first row has been removed (12 stamps), along with the last two stamps in the sixth row, the last six stamps from the seventh row, the last stamp from the eighth row and the last stamp from the bottom (20th) row, i.e. 22 stamps in total.

re: Imprimatur stamps
I should add that this SG catalogue does give prices but this catalogue isn't updated very often and my edition is from 1977!
This catalogue has now been split into two parts and the GB QV line engraved stamps are listed in the SG Great Britain Specialised Volume 1 Queen Victoria Part 1 which covers the line engraved stamps only.
I believe this was published in 2020 based on its SG part number and I would expect this to have estimated prices for imprimatur stamps from this period.