I'm trying to compile some info. on this interesting watch so any contributions will be appreciated. Seems to have been produced with at least 4 varieties of dial design with the following inscriptions on the lower half of the dial. I must stress that this ordering is totally arbitrary on my part, I have no idea what the sequence of the different iterations was. For instance although the watch was first announced at the Basel Fair in 1963, an example of #1 below has a Ser. No. 2825468, indicating a very late 60s manufacture. 1. Railrouter 1205 2. RR. 1205 3. RR.1205-0 4. Railrouter Chronometre Versions 1, 2 and 4 have Cal. 1205 movements (numbered 9266, 9255 and 9557). #3 has a Cal. 65 (not numbered). The information I have garnered so far is based on a very small sample so I would welcome anything you can add regarding other examples, especially serial nos.