The Font Clock was designed by Sebastian Wrong, based on a British 24-hour clock design, and uses twelve different fonts. They are three altogether, the small, medium and big. They are priced £195.00($395), £550.00($1116) and £810.00($1643) respectively.

Small – (Time only)
Medium (picture on the left)- (Time and Date)
Large – (Time, Date and Day of the Week)

[via Uncrate]