Advice on a 68 Ryan/Koosman - MINSIZERQ

[Batpig]

Hi all, recent lurker and first time poster. I'm using my first post to get some advice on a recent PSA submission. Some background first - My father has collected cards for years as his "retirement" nest egg. He even had a card shop locally in the 80's and 90's that I worked at that he basically used to grow his collection. Well, he's now at the point where he wants to start to liquidate, so I'm helping him with that.

He's never had anything graded, so we started with a couple cards as our first submission to PSA, one being a 68 Ryan. The card is beautiful. I expected it to get an 8 minimum, and possibly even had a shot at a 9. I was sick when it got the MINSIZERQ. When I saw that I actually assumed that meant trimmed, but now know that isn't necessarily true. Furthermore, prior to sending, I had compared the card to others I had on hand from early 70's, and the size matched perfectly (I didn't have any other 68's on hand). I figured maybe I'd missed something, but I got the card back today and compared it again with the same results. He got the card in the early 90's from an auction of a high end collection, so it's always possible someone did a really good trim job on it, or maybe it is slightly small from the factory and I'm just not seeing it. I'll be visiting him in a couple days and will be able to compare it to his other 68's just to be absolutely sure.

However, I'm wondering if I chose poorly in using a card like this in my first submission, and maybe it was rejected because they were thinking there's no way a card this nice would come from a first time submitter. Whatever the case, what's my best option? Should I resubmit again after submitting a bunch of other stuff, submit to SGC instead? Obviously these submissions can get pricey if I continually get rejected. I appreciate any input!