These are GE Filter-Flo machines in Turquoise. That color was discontinued on residential machines in the mid-late 1960s but I think coin-ops from some brands were available in that color a bit longer.
Still, if the lids and tops aren't rusted, I guess they could be saved! The porcelain finish might have protected them. I don't know if the coin box is mounted with extra holes on the top but if not, these could be saved to convert a white machine into Turquoise.