All About Pocket Knives

Good evening.
Please help me in attributing this stiletto dagger. Blade length 152mm, handle length 104mm, blade width 19mm. The handle is made of ivory and the silver lining and butt are made of silver. Unfortunately, there are no markings or stamps.
My friends say that this dagger could have been used during the US Civil War. Or it belonged to one of the poker players.
I would be very grateful for any information.
Sincerely, Dmitry Kruk

I can’t help with the ID or history but that is one DANDY knife!! Has 1840’s-60’s look about it.

Can you show that photo?

Sorry not the name “dandy” the caps was to empathize how much I like your knife. The only thing wrong with it is , I’m not the owner.

Super! I think, it's not very big mistake . We can fix it. The main thing, your desire!)