13.
The kingpins are supported by reliable, long-lasting phosphor-bronze bearings.
A couple of drops of light oil on the kingpin bearings and track rod ends, every month or so, is all that's required for long, trouble-free life. Apart from the usual cleaning and the very occasional cable adjustment this is about the only maintenance required. The addition of the Scottoiler miscible oil chain lubrication system has virtually eliminated the messy job of chain cleaning.
The later badge lettering is more discreet.