Parts question
 

I'm in the process of restoring an old Viking and need a few parts sources. Bike has the old skip-tooth cog/ring/chain and while the cog and chainring is okay, I will need to source a chain. What is the best outlet for this?

Interesting old bike, fixed gear, adjustable handlebars that allow going from cruiser style to drops by loosening the center bolt.

Thanks,
Dave