"gross_arrow" wrote in message om...
thanks to dave butler, who pointed out my ignorance.

i have now seen pictures (on the web) of the century 21
autopilot. it must have been a very short run, because it
seems odd to me that century lists the iib and the iii, which
appear much older designs than the 21 (showing them as
discontinued), but have no product listing for the 21. they
do, however, show a service manual for one at $200.

Their tech ref index actually does list the 21 as a model.