How much does writing on cards hurt their value?

[wdwfan]

I picked up a lot of 1962s yesterday that all had writing on them. It was either initials (AA) or year (62, 52, etc.). Other than the writing, most of them are in pretty good, middle of the road shape for the 1960s.

I've included scans of a few of the bigger names from the lot I picked up. The Musial with the tape has a crease, and both Spahns are really rough with a crease and/or tape marks. Other than that, most just have the writing on them. Otherwise, they'd grade probably VG to VG-Ex.

My question is how far does the writing knock down grades? For example, what should I list the Maris at? Fair, Poor, Good, VG? What?

I'm going to be looking to sell these as I can't use them in my set due to the writing. But I was curious what to list them at when I do the listings/thread. Thanks in advance.

Here's scans of the best cards...