Are Either Of These 1840 Penny Blacks Worth Anything?

I believe both of these Penny Blacks are from 1840, very interested to know if they are worth anything!

Thanks in advance :)

Both your Penny Blacks are of value.
The PL one is a 4 margin plate 6 I think... a slightly better scan or photo would confirm. I think there might be slight surface scuffing at the bottom so that might reduce the value. Also it could be a little "grubby" but that might be the result of the lighting. If in good condition, you are looking at £100 plus.
The KB stamp is a better looker but spoiled by the left and right sides being "frayed". Looks like plate 2 to me. Value in my view would be 40- 60 pounds on a good day.

Thanks for the reply :)

I think I will put these ones on ebay and hope for the best!