MCM retail Sealtest cottage cheese or Libby night before Christmas glasses (9)

Product Name: MCM retail Sealtest cottage cheese or Libby night before Christmas glasses (9)
 these are very rare! Please glasses are approximately 5 inches tall and are in great preowned condition. They are mid-century modern from the 1950s. After doing some research I believe these to be sealtest cottage cheese christmas glasses  that were given away as promo items. Another website said they may be Libby but I don't believe that to be the case as there's no Libby mark on the bottom of the glasses. T retail 25. .