Replaced hardware: assess traces, compatibility and retained parts

Tuners, bridges, saddles, pickguards, knobs and strap buttons are often replaced because of wear or preference.

Check whether the replacement uses existing holes, whether impressions from earlier hardware remain and whether removed parts have been retained. A reversible upgrade with the original hardware included is different from a change requiring new drilling or machining.

Also consider correct function: a damaged original component may have documentary value without being the best choice for daily use.

Always describe what is fitted now and what is supplied separately.