New old stock GM part# 4407840, 4407841 and two 4482534 quarter window glass seals for 1964-65 Malibu SS Sport Coupe and more.  4407840/1 are vertical glass seals LH/RH that also fit 2-door hardtop Olds, Pontiac, Buick A Body cars (and Chevelle) plus, 1963-65 Buick Riviera.  The two 4482534 (both are a little wavy but pliable) are ONLY for 1964-65 Chevy A Sport Coupe - no other GM brands we could find.  These are both RH outer quarter window seals.   Found loose in an old Chevrolet dealership with GM packaging.  PLEASE be sure this fits your needs - no returns.  They may not be perfect, but if you are searching for genuine GM pieces, here are some hard to find ones.  See photos. One price gets all four pieces.  Sales tax may be applied by ebay for some states. Thanks!

NOTE:  Sold as-is - no warranty.  No returns.  Ship cost shown is for continental US 48 states.  Please be 100% sure this fits your needs.  Even though eBay is adding a video to every listing saying they promise items fit your vehicle, we do not accept returns and it is still your responsibility to be 100% sure this will work for you before you buy.  Thank you.