[G6Tanuki]

The crystal was typically one which would put the receiver reliably on 2182KHz, the old international marine-distress frequency, which a vessel's radio-ops were encouraged to monitor when not actually handling traffic.

From some of your pics I see the presence of "Metalmite" capacitors - these and their "Metalpack" brethren are really just waxies-in-a-shiny-can and suffer the same inevitable leakage after a few decades.