This is the 1962-66 version with an alert* tone instead of the hi-lo:
https://www.ebay.com/itm/vintage-fe...166746?hash=item4b61ab599a:g:gzoAAOSwumRcoW5X
*Steady tone, to be used as auxiliary storm or other community warnings.
https://www.ebay.com/itm/vintage-fe...166746?hash=item4b61ab599a:g:gzoAAOSwumRcoW5X
*Steady tone, to be used as auxiliary storm or other community warnings.