DH says my folks had it before they left for San Diego in 1962. That's my timeline.
The writing on its underside says "West Bend. Penguin. Hot & Cold Server".
Who knew West Bend was manufactured in West Bend? Neat.
My sister worked at West Bend Aluminum Co. right after she graduated from high school - Campbellsport where my mother's family lived then, was close enough. She started in the office as a clerk but then got a job operating a polishing machine as it paid a lot better but was a dirty job - she said even wearing coveralls, a snood, gloves and face protection she would have black aluminum powder on and in her skin which required scrubbing with a brush.