The factory started applying the zimmerit in September '43. Was it applied in the field before September? Never heard that it was. It was retro-fitted to many, not all tanks in the field after September '43. Remember, Tiger tanks didn't have a long lifespan, you find few if any pictures of tanks that were more then a year old. It's unlikely that a tank produced in '42 would have zimmerit because it had probably been destroyed by that point.