I honestly don't know as I do not have access to a scale. When my auctions end I will take everything to the Post Office and find out the cost of shipping. I will ship using the least expensive method (first class, flat rate box, whatever) unless the winner specifies otherwise (ex. overnight)
The person who gave it to me, said it was silver... it has what looks like the tarnish you find on silver, and it has that stampy thing (which I still can't read) that makes me think it is silver... but honestly I have no way of knowing it's silver. So bid low, and bid rarely. :-)