I have some CD 121 CD&P TEL CO's the 2 in this picture both have dome markings, the one on the left has a Capital D on the dome, and the one on the right has a backwards 1 so going by the 2 options, these are both 's
now here is the question the one on the Left is exactly by the description in the book C.D.& P. TEL CO (capital O at the end and only 3 periods in total)
the one i have on the Right, with the embossing C.D.& P. TEL.Co. (small o at the end and 5 periods in total) isn't listed in the book.
the  has this exact layout but doesn't list as a dome embossed, so i can't say it is that.
so either it is a different version of the  with a different font or it is a different  that has a dome embossing added
i know these are only low value ones, but can anyone tell me if this is an unlisted error or different [#]
with so many differences having their own [#] with just the slighest of changes, i am just wondering if i have a rare find here (not to be a great increase in value) just to add to the price book as a new variant.
Thanks for any help