Both are side shifters from 73 914's.
one has number 914/11 HA0051554 stamped on it.
the other one has HA 18 10 2 spaced out like I typed it.
davep gave me this information about them
HA0051554 is one of the first side shifters from about August 1972
HA 18 10 2 is a little bit later about Oct 1972
Both need some amount of rebuilding, I'm told the bearings are shot in both of them. I had one of them in my 914 and it was very noisy. One of them has an ear broken off, but its included.
$50 each or offer, I would rather not ship them at this price.