So, thanks to the membership, you all helped me identify the gun in this thread.

https://wethearmed.com/handguns/help-me-identify-this-gun/

I've now been given the task to try and sell it and to get as much money as I can.  Since it's an oldie, I'm guessing it falls under C&R.  When I do sell it, do I have to ship this through an FFL?  My guess is the person that buys this will have their C&R and that I can ship to them directly.  What pitfalls do I need to be aware of?  Before I make my listing on GunBroker, I want to make sure I include the proper shipping amount.

I assume if I have to ship through an FFL, I'll be paying a little more rather than shipping shipping direct.  I also assume I can't ship via USPS and that it must be through FedEx or UPS.

It doesn't fire fixed ammunition so legally speaking it's not a firearm at all. You can send it directly to pretty much anyone, by whatever means is convenient.

Okay, but I'm going to answer the question, anyway.

It's been my experience that going through a dealer is the least expensive.  While, yes, they do take a cut, they also have the option of shipping via USPS.  They also don't have to do overnight shipping.  The one time I shipped via ffl, it was <$50.  The two times that I shipped via UPS Air, they were $80ish and $90ish. 

All three were semi-auto handguns.



Kaso

So, if I interpret this correctly, this means I could use one of the USPS Flat Rate Priority Mail boxes and send directly to the buyer?  The reason I question this is because "they" sell new replica 1851 Navy revolvers for $200 at the store.  Is the difference the age of the gun?

Yes, and yes.

Cap-and-ball revolvers (including replicas) are legally classed as "Antique Firearms", and in most jurisdictions aren't regulated much more than any other lump of metal. Shipping in a USPS flat rate box directly to the buyer is just fine.

The price difference between an original Colt and a new replica is because of the collectability and rarity of the original. Colt obviously doesn't make them any more and they are historically interesting.