[Hallicrafters] SX-71 serial # and Run # markings

[Chuck McGregor]

Sorry to ask a seemingly silly question, but where should I expect to 
find the serial number and the run number stamp on an 
SX-71  ?   They're not on the chassis top or the rear apron, and 
there's nothing on the inside of the chassis side panels (where the 
SX-42 run # hides).  I find three inspection stamps on the chassis 
underside, below the 2nd converter subchassis.  I haven't pulled the 
front panel to see if any numbers are hidden behind it.

Thanks & 73
Chuck N7RHU