The package containing diecuts comprising the Hep Cat Orchestra is not vintage. Beistle's first foray into reproducing vintage items took place in 2003 under the banner of Old Time Halloween. This was a short-lived foray as it wasn't successful. Beistle learned from this and became smarter about a decade later when they began issuing reproductions using quality materials and packaging. They also took, and continue to take, pains to ensure their reproduction efforts don't interfere with the very robust secondary market.
Mark B. Ledenbach's vintage Halloween collectibles blog.