Originally Posted by
CriticalThought
I thought the crank bolts looks much to modern for the bike.
I can't tell if they're self-extracting bolts, or just Allen head bolts with integral dust caps, like these:
Surprisingly, I don't think I mind the 16mm fixing bolts being replaced by the one-key release mechanism types, though I might keep an eye out for the old Zeus ones (and grab or make an appropriate socket) at some point. We shall see.
The sage advice, BITD, was to replace the 16mm bolts with 15mm bolts, so a standard peanut-butter type wrench would fit. I'd just leave the ones you have, as they'll work with a standard Allen key.