You know the rule of these crates already... they are not giftable.. you can only get them by purchasing with your Reward Points..
Buy only at discounted price!
Just go to Daily Checklist to see the ads about these Crates.. or go to the Marketplace.
You might be luck on opening the crates.. Want to know what the items are? Check Mafia Wars Wiki for the details.. I got this info from Hayden and Xmas, I am sure they had these screenshots from Mafia Wars Wiki..
Here you go :
And Hayden had chance to buy 3 crates at discounted price..
You got one RARE item, Hayden.. Congratulations..
I don't want to buy any of these crates, because we can have more better items for free in Vegas now.. But if you want to have Treasure Hunter Achiemevent, you can try to buy them..
PS : Thanks for the kind info, VaibhaV, Hayden and Xmar..
All of you made my job easier on posting this title..
Credit goes to Mafia Wars Wiki! Thanks to the admin and all fans!