When I was studying for a degree in guitar making, one of the units on the course was Restoration and Conservation, obviously the subject matter was early stringed instruments, but the core values and arguments that ensue apply to razors.
I like to think of the two subjects as being on opposite sides of a set of weighing scales, if too much weight is given to restoration conservation suffers, and vice versa.

To take an object of age and preserve it as it is at any given point in time, is surely conservation, restoration however concerns itself with returning the object to it's original condition, so it's a balancing act between the two, can one conserve and restore? Or is it a definite choice between one or the other?