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!
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Sorry- bungie does not replace deleted items. In the future- use the "lock" feature to prevent accidental dismantles.