In a stamp collection I recently purchased is a stamp I had difficulty determining what it is. It seems that it may be a scott# 65-TC1 trial color proof, this one is green. However, it was used for postage and has a cancel on it. I can find no information about it anywhere. I am hoping some here more knowledgeable will know something about it.
On the back of the stamp in pencil is written the number 55, so I assume it was a proof scott# 55 until the color was picked to produce the scot# 65 which is blue. I know there are other color proofs of the same stamp, but am curious as to the use of this one as postage with a cancel and what value it is. It wasn't listed in the 2009 Scott catalog.
Here are some images of it. I had to take photo with cellphone camera as I do not have a scanner at the moment. Thanks in advance for any help.


