When Pan Chao throws his hatchet at the crow and Caine catches it, the blade is bright silver and the handle light brown. When Caine then throws the hatchet to the floor, the blade is black and the handle dark brown.
When Caine throws the ax into the floor other ax marks are clearly visible in the wood. This indicates that it was a insert shot after several attempts were made to get the right shot needed of the ax being impaled in the floorboard, but no fresh wood was used to replace the failed attempts prior to the take used in the final edit.
When Caine is fighting outside the hotel, Clarence Murphy falls back before Caine kicks him, stumbles before Pan Chao backs into him, and is completely shaken when Capt. Brandywine barely bumps into him.