Who freakin' cares that all the SN's are "12". Certainly not me. If the collection were little more desireable to my uses I would certainly do it. A collection of used guns w/ dies, brass, bullets and optics would be more up my alley.
I borrowed $20K to buy a truck that will rot away, breakdown and be worth nothing after time...I'd certainly borrow $16K for a collection that would last forever.