I just bought the Harper's Shell and the Refashioned Ship and neither appeared in my inventory page to unlock, but I lost the silver associated for both. Really -blam!-ing angry right now.
Nevermind, it went to a different spot than usual.
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If they are not in their respective spots (shells/ships) to unlock fill out the Missing item form https://www.bungie.net/en/Help/Troubleshoot?oid=13681