6-7 keys and probably will keep on going up. Although not by much since they still drop/
 
As others have said, it is 6-7 keys, BUT it can be more profitable just to open it. The crate has a greater chance of winning than losing.
 
For an experienced trader, maybe, but for someone new who may have found it dropped or whatever, it's a big difference. Also, it is forty-two percent more potential profit.
your better off selling it if your looking for profit. Also nvm its 3/5. Forgot the gunslinger.
 
Seeing as how crates discontinue to drop as newer ones are added, I would assume so yes.
Crate 30 is the exception to this rule. There are several crates after #30 that have discontinued, while #30 still drops.

Since it's "salvaged", chances are that it will be an infinitely-dropping crate since it's special.
 
I remember the day they came out i saw one sell for a burning blighted beak LOLOL i feel sorry for the guy who bought the crate