WTB Vintage SS Rectangular Watch or SS IWC Automatic from the 50s/60s

WTB Vintage SS Rectangular Watch or SS IWC Automatic from the 50s/60s

Hi,

I am looking to purchase a nice vintage stainless steel rectangular "tank" or reverso style watch, Jaeger le Coultre would certainly be the most desirable but I am open to suggestions on any other swiss.
Other model I have my eyes on is a stainless steel IWC Automatic Cal 853/854.
The pictures below are the style I am looking for.

Thank you

Vico

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Thank you

Victor