Mantle 1953 PSA : here is why you should never put cards is heavy screw downs OUCH

[megalimey]

Mantle 1953 PSA here is why you should never put cards is heavy screw downs OUCH

THIS CARD WAS IN A THICK HEAVY LUCITE SCREW DOWN HOLDER
took it out put in a card saver as per instructions , sent into PSA for grading

I always add if no minimum grade given please Authenticate
on any card , as the cost is the same and there are so many trimmed touched up, writing erased or even fake cards,

any way imagine my disappointment just got the grade or non grade it is coming back to me PSA Authentic Altered
maybe being in a heavy screw down for decades may have created an unnatural looking surface / blemishes ?? or something not related ? it has not been trimmed , as there is some slight fraying where you can see surface touches on the back edges and on all 4 corner tips which are not perfectly square or sharp ,

obviously this Mantle with great eye appeal and strong centering, there are no visible creases or wrinkles, looked like at worse VG-EX 4 or EX 5
so potentially a high value card which I was hoping too sell
see the card before and after in the holder
let me know what you think , FYI I am going to leave it in the PSA holder
as I see these selling on ebay , and I think mine looks as good if not better than any of those PSA AUTHENTIC ALTERED for sale or sold on Ebay,
I am looking to sell this card , but with no grade , hard to assess a value