How to submit for than 20 cards to PSA??
 

I'm going to submit around 52 vintage cards to PSA for their Sept. CC deal. There form only goes to 20 and each form represents a different submission #. How do I submit for that 20?

PSA submissions
 

I just make copies of the 1st page and use that. Seems to work

A spreadsheet attached to the form is the way to go. I actually prefer to use this as it is much faster than trying to fit all the information in spaces on the form that are much too small for human writing.

Also will reduce the chance of an error being made due to illegible writing.

you can attach a spreadsheet, or print out a 2nd invoice, scratch out the invoice number and put the original number on it. That is what they've done when I'm making in person submissions.