Sorry that I couldn't respond to your question yesterday, but yes, that
is the way the bike came. It also came with a 1/2 pitch chain ring which
is stamped, Eisenmann, the importer for the bike. After yesterday's com
ments I reviewed photos of other Sieber bikes on Wool Jersey. There is a
picture of a Sieber that Ted Ernst sold last year which is identical to
mine with regards to the chain ring/crank and paint scheme. Also there
are some great pictures of E. Albert's bike which clearly shows a drille
d fork crown and bridge and a 1/2 pitch chain ring.
I believe that all of the Siebers used the drilled double plate fork cro
wn on all of their bikes allowing the bike to be used on the track or fo
r possible road use. On CR, in the Swiss builders section, Bob Graf has
a Sieber with brakes on both wheels. There is also another Sieber with a
drilled fork crown, but not the bridge. Now that I know the difference
between a 1/2 vs 1" pitch chain ring, I have to find out what a block c
hain is. Thanks for your interest.
Jerry Jeter, Wildwood, MO USA