I'm mostly curious as to their look and styling. Cottered cranks, probably, steel stem and handlebars, skip-tooth chains, etc...
Anyway, I would really like to see some pictures of
old, old bikes, which were, incidentially, fixed-gear because it was at one time that or an internally geared hub.
Please, everyone, post some pictures, I'm yearning to see em.
As for a date cap?
Umm...
2000 - Too new.
1990 - Too new.
1980 - Too new.
1970 - Too new.
1960 - ... Maybe.
1950 - ... Maybe.
1940 - ... Maybe...
1930 - Yes!
1920 - Yes!
1910 - Yes!
1900 - YES!
1890 -YES!
1880 - Wow..
1870 - They had bikes?
1860 -