Mr. H
Member 
Member - APS #129381
Posts: 952
What I collect: US, Netherlands, Whatever suits my fancy.
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Post by Mr. H on Aug 14, 2020 21:11:32 GMT
I have come across several precancelled stamps with plate numbers. Does anyone have a rule of thumb as to how to value them?
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khj
Member
Posts: 1,524 
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Post by khj on Aug 14, 2020 22:05:25 GMT
Precancel varieties/EFOs notwithstanding, why not just use the Scott US Specialized catalog value for used coil plate number singles as a reference line?
Or are we asking about precancelled sheet stamps?
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Mr. H
Member
Member - APS #129381
Posts: 952
What I collect: US, Netherlands, Whatever suits my fancy.
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Post by Mr. H on Aug 15, 2020 0:28:50 GMT
I was asking about precancelled sheet stamps.
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angore
Member
Posts: 5,697
What I collect: WW, focus on British Empire
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Post by angore on Aug 15, 2020 11:09:41 GMT
The society for these is the American Plate Number Single Society.
As a general rule, I do not think they have much a premium unless the plate number itself is unique. Plate block values are down so expect singles to be the same. You could see which have higher plate block prices so you may get an idea which may have some value.
The Durland catalog (a publication by the USSS) has values by plate number blocks for all stamps.
The other approach is to go to ebay or hipstamp and look for similar to see what they are selling for.
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angore
Member
Posts: 5,697
What I collect: WW, focus on British Empire
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Post by angore on Aug 15, 2020 11:11:38 GMT
The society of these is the American Plate Number Single Society.
As a general rule, I do not think they have much a premium unless the plate number itself is unique. Plate block values are down so expect singles to be the same. You could see which have higher plate block prices so you may get an idea which may have some value.
The Durland catalog (a publication by the USSS) has values by plate number b for all stamps.
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Ryan
Moderator 
Calgary, Alberta, Canada
Posts: 2,749
What I collect: If I have a catalogue for it, I collect it. And I have many catalogues ....
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Post by Ryan on Aug 18, 2020 13:03:24 GMT
The American Plate Number Single Society has a catalogue for plate number singles. It's known as Hebert's Standard Plate Number Single Catalogue. My copy is from 2007, and I see online that it has been issued as late as 2018. There is a big pile of listings but not much detail is needed for a lot of it - for example, the very common 2 cent flat press Washington I show below (Scott #554, imaged nabbed from The Swedish Tiger) has somewhere around 1400 different (!!) plate numbers listed, every last one of which was given a value of $5.50 for a mint stamp and $3.00 for a used stamp. In general, stamps from before 1925 have quite a strong extra value added for plate number singles. Stamps after this point are usually much cheaper (the rotary press 2c Washington from 1926 has plate number singles priced as low as 25 cents used).  I should note that this Hebert's catalogue is priced for regular stamps, not precancelled stamps. I don't know of a catalogue for precancelled plate number singles. Ryan
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Mr. H
Member
Member - APS #129381
Posts: 952
What I collect: US, Netherlands, Whatever suits my fancy.
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Post by Mr. H on Aug 18, 2020 18:52:40 GMT
I have to most current Hebert's, so I was going to use that as a place to start, but didn't know if anyone have a generic formula for a precancel (using the most common variety). I know rarity of town and type would add more.
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