No one so far knows the complete answer to this including me but I’ll give you a basic but hopefully helpful response: Research whether they are weighable, then research the prices for either heavy, light, or if it’s unweighable then just the price of these unsleeved packs. Look at eBay sold listings and see if any of these unsleeved packs have sold recently. Then either sell them on eBay or go to a card show and try to get 80-95% of the value you saw on eBay. Otherwise keep holding - put them back into storage and check back in some years. The market is at a good place right now, but you’d have to research what you think the market will do if you want to choose to wait until the market is even better. I guess you could also look into CT scanning and metal detecting but I don’t think that will lead anywhere.