Iwc Pilot 378003 43 mm: what to check on a used piece

Iwc Pilot 378003 43 mm is the reference in this note. Lay the watch on a plain cloth under a lamp. Read the case flank before you read the dial, because the flank shows tool marks and a polished edge that a photo crops away. Count the lugs. Note whether they are drilled. A drilled lug means the strap can be changed with a spring bar, and the hole should be round rather than oval from a bar that was forced. Flex the bracelet at the first link. Stretch that does not return is wear, not a style. The clasp should close with one click and sit flat. If it stands proud, the fold has been bent. Look through the crystal at an angle. Dust on the inside of the glass is a different problem from a scratch on the outside. Write which one you see. Then set the hands and watch them for a full minute so you can say whether the seconds hand ticks or sweeps. That single observation tells you the kind of movement in the case. Record it next to the reference engraving. The two notes belong together.

How it differs

Iwc Pilot 378003 43 mm is a pilot layout: a readable dial, a long lug, and usually a large crown. Check that the crown clears the back of the hand when the watch is worn, and that the lug length is what you measured, not what a listing claimed. People change straps on pilot cases often. The lug width has to match the strap. Write the width in millimeters.

What to check on a used piece

What to check on a used Iwc Pilot 378003 43 mm starts with the engraving. The reference to read is 378003. Measure the case. Listings often say 43 mm, and the ruler is the check. Then check end-link play, clasp fold, and whether the hands pass each other. There is no price in this note.

Common mods

Common changes are a new strap, a larger or smaller crown that was fitted during a repair, and a crystal. The lug width decides which strap belongs. Measure it instead of trusting the holes already punched.

What people change

On the Iwc Pilot 378003 43 mm, people change the bracelet, the case, or the movement.