Joseph is correct about Leica collectables. Once, during the "fat '80s", I had a small collection of about 10 older Leica cameras, a few of which became increasingly in demand from wealthy Japanese collectors.
Buyers use to trail me at camera shows with wads of cash making higher and higher offers to buy. Since I was much more interested in using cameras rather than collecting them, I finally gave in when the feeding frenzy reached a level approaching insanity.
For ex&le, one camera/lens/leicavit combo provided enough cash to fund an entire Leica M system including a 2 M cameras, and an array of lenses including a 75/1.4 and Noctilux. I made about a 600% profit from my original purchase.
A few years later the bottom dropped out (relatively speaking), and I just smiled as I went about shooting with my complete M kit.
Joseph, the MP3 is the current LHSA limited issue with the matching Retro design 50/1.4 ASPH. It is a camera I use for personal work and enjoyment (like travel). I no longer will own a camera that I do not use. I also have a M7 and array of black M glass from 28 to 135mm for commercial and wedding applications.
The MP3 is the last film camera I will buy, and when the M digital arrives the M7 will be sold.
The MP3 is a thing of beauty and grace...