Code numbers for hand telephone sets--desk type

[poplar1]

I came across the following:

Manual (non-dial) hand telephone sets:
202A  hand telephone  set-----D1 or B1 hand set mounting
202H---D1 or B1
204A---D3 or B3
206A---D5
207A---D3
208A---E5
215A---D8

With dial:
202B, 202C, 202D---D1 or B1
202E, 202F, 202G---D1 or B1
203A, 203B, 203C---D6 or B6
204B, 204C, 204D---D3 or B3
205-------------------E4
206B, 206C, 206D---D5
206J, 206K, 206L----D5
207B, 207C, 207D---D3
208B, 208C, 208D---E5
215B, 215C, 215D---D8

Bell System Practices, Section C32.164, Issue 1, 8-2-37:
Hand Telephone Sets--Desk Type--Cording  

The sidetone sets are no longer listed (102 etc). However, the addendum C32.164, Issue 3, July, 1953 includes the following:

103A, 103B, 103C---D2 or B2
205G, 205H, 205J---E7
206M, 206N, 206P---D10

Also, C63.333, Issue1, May, 1955--Hand Telephone Sets--Desk Type--Connections
shows that the 202 and 215 can be used with sidetone subsets (534 or 584) as well as anti-sidetone (684 etc). This contradicts what I have always heard that if used with a 534A, a B1 or D1 hand set mounting was known as a 102. The only possible explanation I can think of is that if these sets have  4-conductor mounting cords, then they should be referred to as 202s even if used with a sidetone subset. Anyone agree or disagree?

                           

[kleenax]

I don't disagree David ;-)