It is probable that the numerals were drafted from scratch by the product designers, like most manufactured devices before a certain time.

I second Kevin's point. OTOH, in a similar vein in one way, and completely different in another…
http://www.myfonts.com/fonts/nicksfonts/architectuur-nf/regular/glyphs.html

You might find something similar here:
http://www.fontbros.com/selectronic/retro-1936-1965

Freezer may be the ticket - http://www.fontbros.com/families/freezer-btn

Thank you so much! Freezer looks good...