I can't. The original paint of the original car cannot be sure that the water tank rack has not been moved. It only means that the car paint has not been passive. Here's how to check whether the water tank frame has been replaced:

1. Check whether the solder joints of the frame have been re-polished.

2. Look at the picture frame for signs of cosmetic surgery.

3. See if the paint of the frame is consistent with that of the engine compartment.

4. Are there any traces of repainting or redoing?

5. Check the side of the car body for signs of collision repair. See whether the door is close to the body, whether it is warped and whether the door crack is uniform. If it is repaired or replaced, there will definitely be some defects.