We have a rusty vintage/antique chain with unique links.  It has 2 end hooks and 2 circular hooks within the links.  There is a knot which I could not remove - I do think with patience this would could be removed.  Each link is about 7/8" x 1/4" in W - there are 1 or 2 links which have been repaired (1 shown in my photo's).  The end hooks are about 2 1/2" in L x 1/2" in W at the end of the hook, they do swivel.  This may have been an old dog chain......?

I will ship internationally, please contact me with your country for a shipping quote. 

Chain Antique 135 inches rusty unique links