Not as rare to my lens as 202, but not as common as say 201, 205, or the seeming omnipresent 215. Today, views of 204 on the move are still pretty neat since it’s been more than eight years since it turned a wheel.
These are all Fujichrome photos, since I never photographed 204 at work using a digital camera. Maybe someday it will return to service. But even then I might take it on slide film for old time sake.