Takes guts to start drilling into the face but I wonder if the LED's flash (if there are LED's in the face).
https://www.ebay.com/itm/Vintage-Ph...691515?hash=item3657779ffb:g:17wAAOSwGzNdxiMl
https://www.ebay.com/itm/Vintage-Ph...691515?hash=item3657779ffb:g:17wAAOSwGzNdxiMl