5 links
420 Clocks
420clocks.com
Offers clocks that have the hour hands fixed on 4:00. Offers a range of styles.
Ken-Glo Neon Clocks
ken-glo.com
Reproductions styled after the Glo-Dial advertising clocks of the 1940s and 1950s.
The Clock Gallery
theclockgallery.com
Antique and modern grandfather, wall, mantel and novelty clocks. Also, barometers and antique furniture.
Timebeam / By Design
timebeam.com
Clocks that project the time or clockface on a wall, and accessories. Includes list of retailers.