There were at least half a dozen of these clocks in control panels in wrecked Airstreams in Bob's (RIP) Salvage yard in north Florida last year, so I suspect you will find the same near you. If you type "salvage" into the search box above, you should find the information you seek. If not, come back to us for local salvage yard suggestions.
Nick Crowhurst, Excella 25 1988, Dodge Ram 2500 Cummins Diesel. England in summer, USA in winter.
"The price of freedom is eternal maintenance."