Us Sealed Lp's

[Mike Lofthouse]

wonder if anyone can throw any light on the following... Bob A maybe?

when did the US start issuing albums sealed? How come some 'cut out' albums are resealed? (I've bought a few sealed that had the seal over the cut out hole!!!) What's the score with the actual vinyl sealed within the cover - got a Columbia one today - looks totally un-played but the cover is a bit rough. And finally I have a number of LPs with multiple 'staple' holes in the top corner, is thus just another way of indicating a cut out?

Mikw