greggah,I hope its not too late for me to chime in...
I've never seen a skip link chain without a master link.
If your chain is real rusty/crusty/greasy it will be tuff to find because the master looks alot like the rest of the links,BUT is just a little diffrent looking.
I would hose that chain with PB Blaster/gasoline etc. and scrub it with a toothbrush.
I'd bet ya it will show up.