[Baeocystin]

The one I played with as a kid used oven light bulbs. They look pretty much the same, but solderless construction, and IIRC quartz glass and a slightly more robust filament.

[tyingq]

Hmm. Any idea roughly what year? The manuals I can find online all say "standard light bulb".

Like:

https://imgur.com/a/uF9ffe1

https://imgur.com/a/F7WwpGg

[Baeocystin]

Huh. Interesting. This would have been the late 70's/early 80's.