Heuer Chronograph ID Request

Hi All,

I recently acquired an Heuer Chronograph and was hoping that you could help me to identify it. What I know is that it has a Valjoux 22 movement and the seller said it was produced in the 1950s. The case diameter without the crown is approximately 36.5mm. Thus far I haven’t been able to determine what reference it is. Thanks for your help!

Kind regards,

Michael

Don't know this one. There are some similar models in the 1946 Catalogue

Thanks very much!