If the original one doesn't get identified, House Industries' very retro Chalet London 1980 may come close or be a good place to start.

Thanks Vivicity. You're right – Chalet London 1980 does come very close, although I love the very rigid geometrical structure of the font pictured (the zero is a perfect circle, though, of course, the "10" could be a different typeface altogether). Thanks much.

You're welcome.

For all you know they used a lowercase "o" for the zero even then!