Do Plate Number Singles Have Any Addition Value If On Cover?

i used to work in offices for a long time and have always collected the plate numbers from the business mail.
i have I guess about 75 to 100 on cover.
does having them on cover add any addition book value to the stamp?

they are H (33c) Hat (3264/66), 32c Flag over Porch, 29c Flag over White House (2609), 29c Flag over Mount Rushmore (2523/A), 25c Flag over Trees (2280), 33c Flag over City (3280-82), 33c Berries (vert) (3304), G (32c) Old Glory (2889-92),F (29c) Flower (2518), (34c) Orchid (flower) (3462)

does being on cover even with just a clear window address envelope?

thanks for any help

Generally, no. (Not for modern issues anyway.)

But there's more to it than that. Many collectors today strive for the entire cover because of the postal markings and cancellations. The stamps you recite go back to the use of CDS postmarks, which is another collecting discipline, as are any slogan cancellations, and other postal markings that may be present, etc.

If you (or someone you sell them to) decides to remove the stamps from the cover, that can be considered later on. As with all philatelic material, once the stamps are separated from the cover, you can never put them back in that format, so I'd err on the side of keeping them on cover (provided you have adequate storage space) just to be sure.

Are you going to get a better return on selling them later on by leaving the stamps on cover? Probably not. But as stated earlier, when the stamps are on-cover it often leads to more interest as there are more collecting options to consider than just for the stamp itself.

i never had a plan to remove any from cover.
more is always better than less I think.

i think I saw some note on a pnc on cover for sale on a sellers site is why I asked if better on cover.

thanks for your help

Lonedan, if you are talking about plate number coils on cover, the answer is YES! PNC3 ( the Plate Number Coil Collectors Club ) issues a price list of plate number coils every couple of years. Their last price list includes among other items PNC's on cover, and was issued in April of 2011. I do not think it is available any longer but if you would like to know any prices I will be glad to list them for you.
As an afterthought I give you the website of a PNC cover specialist: www.modcoverguy.com.
Also, if you would like for me to look up the price of a cover please give me the Scott# and the platenumber! The plate# is very important. For instance, Scott 2136 on cover is 75 cents for plate 2,3 &4, but $10.00 for plate 5!

Peter

here are a list of plate numbers that I have on cover:

25c Flag over Trees
2280

7
8
9
10

29c Flag over
Mount Rushmore
2523

1
3
7

29c Flag over White House
2609

3
8

32c Flag over Porch
2915A

22222
45444
66666
99999

2915A

11111a
33333a
66666a
77777a

33c Flag over City
3281

4444
5555
6666
7777
8888
9999
1111a
2222a
4444a

33c Berries
3304

B1111
B2211
B2222

F (29c) Flower
2518

1111

G (32c) Old Glory
2891

s11111

H (33c) Hat
3265

1111

3266

1111
im not sure if it can be this stamp number but maybe

(34c) Cymbidium Orchid
3464

b1111

(10c) Eagle and Shield
2907

s11111

new york public library lion
3447

s33333

I disagree! They are absolutely worth more on cover. Someday you will encounter a fanatic with deep pockets that ONLY collects them on cover (a tiny proportion of all that's out there) and he/she will go nuts, and you will receive a handsome price, trust me.

OK, I got all of them for you, Lonedan!

2280 Cheapest for all your #'s is $1.50. Tagging is the determining factor here.
2523 ( 1,3 & 7) $1.50
2609 ( 3 & 8 ) $1.25
2915A ( 2222 ) $ 1.00
( 4544 & 9999 ) $ 1.25
( 6666 ) if the stamp measures 11x10 PP/VV $2.25
if the stamp measures 10x11 VV/PP $3500.00
2915a ( 11111a & 33333a ) $ 2.00
( 66666a & 77777a ) $1.50
3281 ( 4444, 6666 & 2222a ) $3.50
( 5555 & 4444a ) $2.50
( 7777, 8888 & 9999 ) $1.25
( 1111a ) 2.00
3305 Berries $1.25
2518 $ 2.00
2891 $ 1.50
3265 $ 3.00
3266 $ 50.00 ( I hope you got this # correct! )
3481 Orchid $1.50
2907 $ 5.00
3447 (10cent) NY library $5.00 if untagged. This stamp has been found tagged, but no used on cover examples have been found so far.

If you need help with 2915A ( the one with the PP/VV and VV/PP varieties ) please let me know!

Good luck, Peter

Doug2222, I AM one of those fanatics, although I only collect the Transportation Coils on cover. And you are so right, some of these have gone through the roof!

Peter

they still are pretty nice for having nothing invested

Petert4522: What is the source of the values quoted for the PNC's on cover?

Wt1, the Plate Number Coil Collectors Club, or PNC3 issues a values list every couple of years. The last one, from which I quoted the prices was issued in the spring of 2011. A new values list will be issued later this year and will ( hopefully ) include a values list for precancel gaps.

Peter

here is the perf 11 flag over the porch
im not sure about peaks and valley counts and hope I can get some help

i think it is a Sc# 2915C: Perf 11

Lonedan, Happy to help. The stamp is either 2915A or 2915C, but very hard to tell. Somehow the scan is not clear and I can not count the die cuts on each side. Is it possible to rescan on a black background?

Peter

not sure scanning on a black background is advisable, as it would no longer be on cover....

im so sorry...it is on cover.
it is even hard to see with a magnifying glass
where can I find more about peaks and valleys?

Peter,

Can you work with this image of the stamp?

Steve