Re: Dealer says "it's a painted SS Prop"
A magnet wont stick to aluminum either lol. pretty much there are only 2 ways to find out if it is stainless, first you could go thru the effort to buff off the paint, next take some sand paper to an unimportant area such as inside the exhaust hub or somethin andd see how easy it is to scratch the prop, true stainless steel is very strong and wont show much of anything quickly. the other way you can find out real quick is run your boat in shallow water, after hitting a couple rocks trim the motor up and see what the prop looks like, if it looks like a grizzly bear used it as a toothpick its not stainless if its got a couple dents and dings its stainless.
Better yet you could ask another dealer what the weight difference would be between 2 similarly pitched props, one being alum, the other stainless, weigh your prop and that will tell you everything you need to know very quickly.
Now the real question is did you get charged for a stainless prop? if you didnt i really wouldnt worry to much about it as alum works just peachy in most situations and weighs less to boot.
J~