M-209 - Differents models

M-209 homepage

Introduction

The M-209 was manufactured in several models.
  • M-209: The original model manufactured by Hagelin's factories.
  • M-209-A: The first model manufactured by LC Smith Corona Typewriters Inc. under licence from the Hagelin Company in 1942.
  • M-209-B: The further copies built by Smith Corona Company in 1942, 1943, 1944 and 1945. There are minor differences between this model and the former one.
  • CSP-1500: The Navy model.
Approximately 12,000 M-209A were built and nearly 100,000 M-209B. One can understand that the M-209A models are more rare ... and therefore more expensive. The model of the Navy is very rare (only several thousand copies).

Remark: The Nick Gessler's Web site is the good place to learn more about differences between M-209-A and M-209-B.

M-209 original model

After the acceptation by Americans of C-38 (the future M-209) as the tactical cipher machine, an initial order for 50 machines was submitted to Hagelin. This first model allowed to train the Signal Corps staff. It was very different from the following models (A and B). In fact, it corresponded exactly to the Hagelin C-38. For example, it had locks, and therefore keys. The A and B models didn't have locks.

A training movie about Message Center Procedure shows a M-209 original model (with locks).

References

  • Nick Gessler - Details useful in identifying the various models and subtypes.
  • Cryptomuseum - Hagelin M-209, Tactical mechanical cipher machine M-209-A M-209-B
  • Message Center Procedure (1942) [Training Film] TF 11-671 (We can see the original M-209 model)
  • Richard Brisson - Cryptographic Collection (We can see M-209A, M-209B and CSP-1500 models).
  • A study on canvas - (pouch)