Identifying the type of wood finish is crucial for touch-up repairs, and it can be done through a sequence of tests starting with oil, shellac, and lacquer.
Wood Finish, Sanding & Scraping Buyer's Guide For Woodworkers
Uneven finish, streaks and drips unhappy with my attempt at finishing this wood project, help? : r/woodworking
Wood Oil Finish - what oil gives the best finish on wood
Finishing Oily Woods - The Wood Whisperer
Wood Furniture Care- How to Identify the Existing Finish
Lacquer vs. Polyurethane: When to Use Each Finish?
Perfect Hand Lacquering: #TrucoCarpintero #ProyectoMueble — Eightify
Which Finish? Polyurethane, Varnish, Shellac, or Lacquer? - A Butterfly House
What's the Difference between Shellac, Polyurethane, Varnish, and Lacquer? - Kitchen Cabinet Kings Blog
Why End Coating Logs is Crucial in the Lumber Industry — Eightify
How to Revive a Finish - FineWoodworking