On the subject of "slabbing", perhaps Dave Lange (of NGC) would "take on board" the problem that slabbing creates with some series of coins like the Portuguese and Brazilian "joes" (gold 6,400 reis) many of which are contemporary forgeries but when slabbed can't be weighed which is all important to identifying forgeries. Likewise, I've even seen West Indian cut/countermarked coins slabbed so their weights can't be determined. The practice seems to be extending into British hammered coins where, once again, weight is often important.

It would be helpful if instructions on how to extract the enclosed coin could be printed on the slab label.