LM8368.... on a google search (LM8560 equivalent)
here's an idea.... how about a shift register (74hc595 is cheap) to count the pulses from a standard anologue clock mechanism and make a 72 led clock (check the 72 led watches on ebay).
i bought 20 of these 8bit counters (they were cheaper than decade counters) to do seconds, mins and hours but havn't made it yet.
another option would be to count into a divider circuit to make one pulse per minute, that would reduce the number of counter IC's needed. (or a reed switch and tiny neo magnet on the seconds arm).