Help On The Plate Number Of This Penny Black

Hello everyone,

I am a new member to this forum and am fairly new to stamp collecting. I inherited a collection of my father but he did not catalogue many of his stamps. I am looking to continue his collection but also sell a few along the way.

I am having trouble distinguishing what plate the below Penny Black is. I have tried using http://www.maltesex.com/plating/ but am still finding it difficult.

Any help would be greatly appreciated?

Frank

Hello. The prime guide to 1d black plates is Nissen's, to which Spink kindly provided access

https://www.spink.com/private-treat...onstructions

Your stamp has three, rather than the desired four, clear margins, so a scarcer plate number would increase its basic sale value.

Good luck.

Thank you for your help.

After reviewing them I think it could be plate 6, but I am still not too sure.