“Silver Streak” Pyrex Iron Insert, made by Corning Glass Works, Corning, NY, and Saunders Machine and Tool Corporation, probably 1946, designed 1943. Gift of Otto W. Hilbert. 65.4.3
http://www.cmog.org/artwork/silver-streak-pyrex-iron-insert
To view the complete blue Silver Streak Iron, see this previous post http://pyrex.cmog.org/content/silver-streak-pyrex-electric-iron