Unlike a saxophone, the parts of a string instrument that you touch are entirely modern, especially given modern violin technique involving a chin rest. The strings are of course modern, the fingerboard gets worn out and replaced a lot during the lifetime, the neck will have been reshaped (and when that happens the soundpost, nut and bridge will have been replaced) and the chin rest is entirely not original[1]. The playing feel of the instrument is largely down to the shape of the neck and how the instrument is set up (type of strings, bridge and nut height, position of the soundpost relative to the bridge).
[1] Up until the romantic period, violins and violas were played sitting lower down on the neck rather than clamped under the chin. See this contemporary illustration of Mozart playing for example https://baroquebows.com/wp-content/uploads/Mozart.jpg - no chin rest.