Without thinking while checking what a new mark looked like I dismantled my current 300ish titan mark and I'm left with my 272 blue, I don't know if there is anything that can be don't for my silly mistake and I understand if there isn't I just hope there is, it was a Heliopause Mark.
Regardless of what you can do Thanks for taking your time to read this!
I'm sorry guardian but unfortunately there is nothing that can be done. Bungie is unable to restore dismantled items.
It is highly recommended that you utilize the Lock Item feature in the future to prevent this from happening.