[ARC5] (Mil Sets) Non-US Members: Your Input Requested.

[David Stinson]

In a "collector's guidebook" of  non-US 
1930-1945 military aircraft radios, 
what equipments are "must include" in such
a guide, and how common is it to find an unmodified example?  
I define the rarity of examples of 
-unmodified- radios (using US examples) thus:

"Extinct:"  No examples of this set are know to have survived.

"Unique:"  Prototypes, "morgue" marked sets, others
of which there is only one example known to exist
in private hands.
 Example: "Circle-M" marked A.R.C. equipment,
A.R.C. type "K," some models of RAV receiver.

"Rare:"  Ten or fewer of these model sets are 
know to exist in private hands.  
Example: RAT receivers.
(Note to Bill: while there are several RATs around,
there are less than ten of each receiver model known,
and that makes each model or accessory "rare.")

"Uncommon:"  Dedicated search will uncover these sets, 
but you can expect to find only 1 or 2 every few years.
Examples:  BC-950,  Third-generation ATA,
1st-run W.E. SCR-274N (1509-NY-41),
A.R.C. marked SCR-274N components.

"Common:"  Sets that are easily acquired 
with modest effort.
Examples: Most "silver" SCR-274N sets,
AN/ARC-3, most (not all) BC-348 sets.

Thanks for any help.
73 Dave S.

Note to Michael:  Just now unpacking my books.