[TygeBrahe]

Hello Net54!
I have a number of loose W600 cabinet cards which are "safe" in a storage container between acid free lining, but it would be nice to figure out a more permanent solution, however having them graded would be

A) monstrously expensive given their value and
B) not really useful since there's no intention of selling any of them anytime soon.

For those of you who have a collection of W600s, do you have a general recommendation on how best to preserve them for long term storage? Is there an "off the shelf" solution which comes close to fitting these cards and can be retrofitted?

FWIW I'm not a collector per se, these are family heirlooms, so I don't have good tribal knowledge.

Thanks for any advice.

Best,

Tyge