Citizen Bullhead Chronograph Hexagon : This is the vintage automatic Citizen chronograph, Challenge Timer, also known as bullhead, Easter rabbit or Mikey Mouse or panda - due to its particular shape. It was first introduced in 1978. The reference number is Citizen 67-9356. Regarding the shape, you can instantly see that this is not like all the other bullheads. This one has a beautiful octagonal shape that gives it personality, masculinity and a lot of refined power. If you are a citizen collector you shouldnt miss this iconic model. please be aware that this watch includes aftermarket parts ( case, bracelet, dial, hands ) watch is in a perfect condition as you can see and working in a really good order. fast shipping by DHL with tracking number. buyer is responsible for taxes and custom fees. good luck !