1969 Barracuda Formula S NOS Tachometer

I decided it would best be kept in its original condition in a sealed glass box. So I could just imagine and always wonder would it have quirks or would it have worked. I look for the parts we talk about and I know it's getting near impossible to find these unicorns. So that is my input. Not going to be sold.

so do you have the original box. Like in that other NOS one?