Great condition bottle, pretty sure you could get in the thousands for it.
Now from what I know, there's 2 kinds of collectors: those who want the bottle and those who want the Cognac inside...
Yours wasn't bottle all that long ago (in Cognac years anyway) so the value comes from the Cognac. I bet it was pretty expensive when it was bought!
Now what *I* would do personnally is choose the right occasion, and drink it myself with a few important people in your life. Talk about how this liquid your pouring down you throat is 143 years old, how this is super ****ing cool that is (IMO) and have a great time. Man can you imagine how much the world change since then??????
BUT CONSULT A REAL EXPERT BEFORE OPENING IT. YOU NEVER KNOW... might be worth more...less...