Raw Ebonite too dry on Danitrio?

[Keyless Works]

I have this old ebonite Danitrio. I don't know how it was stored but the grip section is darker and smoother while the body and cap feel dryer by comparison. Does this pen need a polish or "moisturizer" of some sort? I don't care about the difference in color I just want to maintain this pen to the best of my ability. 

 

I have read that Renaissance wax is not suitable for ebonite

[lionelc]

would probably leave it alone - this is my swan from the 1920s - the section definitely looks better hydrated than the rest of the pen!  no issue with this century old ebonite, i still bring it for use at work.

 

 

[Keyless Works]

Okay thank you. I wont worry about it.

[Dillo]

That's caused by UV exposure and oxidation. It breaks down the bonds in the upper surface of the hard rubber and causes it to change color. I would just leave it as is. In the future, I would keep it away from UV light to prevent the oxidation from progressing.