Is this the Smallest headtube ever?

[Grant]

Late 1980s Schwinn Super Sport. I did not know that they got this small.

 

[Grant]

 

[RustyGold]

That may be shorter than the 24" collegiate that popped up on CL here:

Schwinn 24" camelback frames (collegiate, manta ray, etc) are about the same size as the bike above, as well.

 

[Grant]

That may be shorter than the 24" collegiate that popped up on CL here:

View attachment 98986
Schwinn 24" camelback frames (collegiate, manta ray, etc) are about the same size as the bike above, as well.

The white bike is 700c.