Canada Queen Victoria Imperf Possible 67Ai But A Single

Hi to all
Whilst resorting some of the stamps in the estate collection I bought I found this.
It has been used and shows no evidence of tampering, ( I am not an authority on stamps, but I looked at it under a 10X loupe and a Gemmological microscope) It is fairly ratty at the base.
Unitrade lists imperf in pairs with no gum.
Has any-one else got an example of this, or do you think it is a forgery.
This estate belonged to some-one in their 90'S
Regards

Horamakhet

Cut corner from postal card. Should be heavier than normal stock.

Hi Nitolures
It is on thin paper and is definitely not from a cut postcard, so the I am still undecided about this one
Horamakhet

I knew I had seen it in unitrade- can either be a PB6 on cream or brown paper or possibly a UL5 where they used some very thin stock. The first being a wrapper so would account for thin almost regular stamp like paper.

Hi Nitrolures
Thanks for the information.
Can you give me section in Unitrade where I might find it.
Regards
Horamakhet