When it comes to antiques the stuff that's survived and still looks nice likely used joinery intended for a long life.
Certain types will survive until the wood itself falls apart or an outside force causes them to fail, that would be most types of dovetails, wedge tenons, draw bored mortise and tenons, ect. Basically all types of joints that do not rely on glue to keep them intact, and if they do rely on glue the wood grain is all going in the same direction. Joints that fight themselves over time will eventually fail.
Properly done mortise and tenons, doweled joints, rabbets, ect can live a long life, but they won't last indefinitely.
Same goes the finish, they used shellac at the time, shellac doesn't get brittle like plastic finishes and can live a very long life.