Some items in the game are supposed to be unique, but actually can exist in your inventory in multiple sopies without any ways to get rid of them or use in any way.
While not a game-breaker, some of us (ok, me, at least) like things to be somewhat tidy, also, we have a precedent in a velocipede (not ratwork, regular one), where this was addressed with an option on one of the cards.
Before making a petition to add such options it would be advisable to make a list of such items first.
These are the ones I know about.
Genuinely unique:
[ul][li]an ornate and hefty gothic cross - from advent
[/li][li]plate of scandalously-buttered scones - from advent
[/li][li]clandestine candle - from advent[/li][li]broken toy - watchmaker’s daughter story[/li][li]lightfinger’s folly - advent[/li][li]gilded crustacean - whitsun and beginning of time[/li][li]dark-carapaced crustacean - whitsun and beginning of time[/li][li]whitsun pets
[/li][/ul]
Knife-and-Candle items.
The game is put on indefinite hiatus, and items which were supposed to be stolen or spent simply occupy inventory:
[ul][li]knife of lost sky[/li][li]waxwail knife[/li][li]shroud of little midnights[/li][li]mirrorcatch box[/li][li]sunlight-filled box[/li][li]sense of urgency
[/li][/ul]
Some things make sense not being unique, being easily produced, but have no use in multiples and no way to get rid of:
[ul][li]most of your books from the court and all your works from expeditions[/li][li]betrayer of measures[/li][li]bone duplicator - can spend one, can produce infinite supply[/li][li]blinding suit and frock - can be produced in multitude, cannot be sold[/li][li]forged justificande - possibly planned for later, maybe[/li][li]trace of the first city - possibly planned for later, maybe[/li][li]bessemer steel and railroad steel - not now, but once the railroad is fully finished they’ll become useless, unless[/li][li]stalemate - used once in one ambition[/li][li]discordant soul - possibly planned for later, maybe[/li][li]cave-aged code of honour - possibly planned for later, maybe, currently used twice, non-repeatably
[/li][li]memory of much lesser self - possibly planned for later, maybe, currently used once, non-repeatably[/li][li]moonlight scales - possibly planned for later, maybe[/li][li]memory of discordance - possibly planned for later, maybe[/li][/ul]
Things that can be sold at bazaar/upper river do not count by definition.
Things in finite supply, with number used as a condition in some storyline, do not count, since they have use.