I was looking for some TDK D-C60 on Ebay and noticed that some wrapped cassettes are not actually new This is an example that seller clearly mentioned it that cassettes are used https://www.ebay.ca/itm/TDK-D-C60-3PACK-47/142780030386?hash=item213e5a5db2:g:cRMAAOSwA4dWHO7w So i skipped this one since i need my cassettes to be brand new. Then i checked other listings. If you pay attention to these listing that reported as new you can clearly see the shrink is curved and i don't expect a company like TDK produce these type of packaging https://www.ebay.ca/itm/Factory-Sea...159586?hash=item2cd3740ee2:g:PzQAAOSwX61ZGC5c https://www.ebay.ca/itm/3-x-TDK-D-C...419142?hash=item3b029572c6:g:PH0AAOSwceZakBAG If you go to the listing and look at the different pictures you can see the shrink is not tightly covering the package. So what do you think about the new old stock cassettes available in the market?
The ones for sale on these sites look ok but those photos you posted do cast some doubt on their authenticity I feel One TDK D 60 Blank Audio Cassette Tape NEW Sealed RARE! Japan Made! Vintage 19 New Sealed x1 TDK D 60 Blank Cassettes Tape 1982 JAPAN TYPE 1 FREE UK SHIP 3 Pack Vintage TDK D60 Blank Audio Cassette Tapes | Normal | 1982 | Japan