Original vintage magazine ad,  DEWEY & ALMY CHEMICAL COMPANY of Cambrigde, MA.  Versatile.  Lining Ends and Closures for Either Tin or Glass.  See It At the Show Booth 34 The Stevens.  Old 1938 dated glass packer industry advertisement.

On the reverse side (see Additional Images tab) is DU PONT Cel-O-Seal Bands Keep Closures in Place.  Keep Lids Secure. Bottle closure.

Approximate size 8 x 11 inches.