AFAIK, no.
It is not stainless steel. My guess is that it was nickeled after it left the factory. A factory nickel piece from 1918 needs to be lettered by Colt.
They sell for $6000 or more (and going up) if they can be authenticated, and if you can find one. I have a Colt lettered "Lew Horton" Colt Combat Python and it is 1 of 500 made. There are also "Calilfornia" Combat Pythons which are desirable as well. Lots of fake are known to exist. 3 inch barrels were put on other Pythons to make them counterfeit Combats. To get a Colt Letter of authenticity, contact Colt Historian Beverly Haynes at: http://www.coltsmfg.com/CustomerServices/ArchiveServices.aspx
There is stainless steel and there is magnaized stainless steel but you can not make regular stainless steel magnetic
You make mare into colt as follows: MARE MALE MALT MOLT COLT
Absolutely. Contrary to pop culture, stainless is not reactive (which is why it's stainless).
No they do not make play kitchens with real stainless steel. They do make them with imitation of stainless steel like the Step2 LifeStyle New Traditions Kitchen.
Go to the Colt website.
Important alloying elements in stainless steel are chromium, nickel, vanadium, molybdenum.
Chromium
Most if not all countries make their own stainless steel.
"Stainless" means that it doesn't rust.