From experience, I’ve only ever had two records new from the library supplier. Back in the 80’s I wrote to John Gale at Studio G who very kindly as a one-off supplied me with a Parry Music album ‘Music Express’ as I enquired what albums he had provided to S4C for their test card / interval music. This album was sealed upon receipt.
More recently I received a Mozart Editions record after an email to Steve who kindly supplied me with MESLP105 at no charge as it was warped, again following a query about music supplied to S4C. Whilst it was warped, it did play fine on my turntable, but the warp was noticeable. That wasn’t wrapped.
To be honest, as most were supplied in cardboard style envelopes, there wouldn’t have been much call to wrap the album covers as it’s extra expense.
Good shout though in finding an early 80’s album that was wrapped.