striping this bike before i offer the frame for sale. made in england, reynolds 21" frame. 3 spd internal hub [archer 1991
just wondering what is the purpose of that clip on the chain link? not a very good pic, hope you can see it ok



usually i'll search for an easy release link before i take a chain off, but this doesn't look like one.
if it is for support, shouldn't all the links have that clip?

also, that nut on the bracket.. holding the chain guard support, is it left or right hand thread?...




and, i want to use the 3 spd internal hub for something else, can it be lubricated with-out pulling it apart?