GUC -Vintage Pyrex Mixing Bowls - Set of Five - from 1945 . Stamping on the bottom of each bowl shows the 1945 logo, which includes the word "PYREX" with the abbreviation "T.M. REG." arched above it and "U.S. PAT. Made in the U.S.A . Complete set includes the Yellow, Green, Red, Orange & Blue colored bowl. Minor chip on bottom of small blue bowl pictured , some scratch’s and small fading . But in Good useable or Collectable condition .