Hi,
I am basically a newbie when it comes to collecting first issue revenues, so I'm looking for some very basic guidance here. I know that the first issue imperforates are often difficult to identify with confidence, and often an understanding of the paper and timeframe of use are of assistance in id'ing them. I still need to spend some time getting to where I can recognize the paper properly.
That said, here is an item that I have a question about -

It looks to me as though maybe it was perforated at the top and bottom, but possibly trimmed away? If so would this be a part-perforated item, or is this some other form of separation at top and bottom? or is it likely just a legitimate imperforate?
I'm just looking to learn what things to look out for here.
It appears to have a pen cancel 1867? - not sure which may have been lightened.
I'm perfectly fine regardless of what this winds up being as I'm viewing this as a learning exercise for me. Thanks in advance.