[Hallicrafters] Need Info, Manual For SX-62A

[W9zr at aol.com]

I recently obtained a SX-62A  and I am trying to learn something about  
variations of this grand old SWL receiver.
 
It is stamped as a Mark 2A, S/N 199,700.  Does anyone know what Mark  2A 
means?  Any idea of the year it was made based on this data?
 
It appears to operate per spec but has all the original caps in it.   Is the 
collective wisdom to recap it now or wait until it has issues?
 
Finally, I would love to have an original manual for it.  Anyone have  one 
they would be willing to part with?
 
73 Randy