Error card website?

[Ervin]

I was wondering if anyone knew of a website(s) that have info on error
cards? I am adding cards to a Beckett marketplace and they have error
cards listed as well. I thought maybe a website existed that pertains
to error cards and what the differences are?

Kind Regards,
Erv

[Hobbyinsider.net]

I was going to say something, but you said "Beckett" ... blah

Post by Ervin
I was wondering if anyone knew of a website(s) that have info on error
cards? I am adding cards to a Beckett marketplace and they have error
cards listed as well. I thought maybe a website existed that pertains
to error cards and what the differences are?
Kind Regards,
Erv