Very nice Lemania 'Silverstone'
TV Dial style watch. These were sold and branded by various manufacturers including Heuer. Heuer sold them as both a 'Silverstone' and a plain Heuer only dial.
This is is the Lemania branded herringbone dial
Lemania 5100 and screwable crown
This watch is available for trade / swap or sale please contact me for more details and images