[Collins] Collins Serial Numbers.

[kiyoinc at attglobal.net]

I was looking at the collins site, 

www.collinsra.com/cra_album/0106/010524_4.jpg

Under 75S-1, it says, "Earliest sn 23"  what does that mean?

Does it mean that Collins started numbering at 23? 

Or does it mean that #23 is the earliest known 75S-1?

It says under 75S-2, "Earliest sn 36"


Also, the bigger table says that "75S-2, included in 75S-1 sn,
50".

Did 75S-1's and S-2's share the same numbering space. I
guessing that if there was a 75S-2 #36, that Collins did not
make a 75S-1 #36.  

Just thinking about how production runs might have been made,
I'm guessing that they diverted blocks of radios, not
individual radios for conversion from S-1's to S-2's.  That
maybe serial numbers 23-35 remained S-1's and 36-45 became
S-2's.  

I'm trying to figure out how early my serial number is. As it
is under 100, it must have been one of the production S-line
receivers.  


The production runs by year are not what I expected either. I
thought S-line production increased in the 1960's for the
Vietnam war.  I guess most of that was KWM-2A's and not S-Line?

 

de ah6gi/4