ASA approved bats

[Insane Blue]

Originally Posted by AtlUmpSteve

While that is true, and the umpire CAN rule it an approved bat on that judgement, those bats do not appear on the ASA Approved Bat List, which was the requirement of the original post.

There is no such thing for bats made after the 2000 standard came to be.
Here is a better link for bats and so on from ASA . Amateur Softball Association of America

If you read #3 this will tell you the only way a bat can have no certification mark and still be legal and that is

must, in the sole opinion and discretion of the umpire, have been manufactured prior to 2000 and if tested, would comply with the ASA bat performance standards then in effect. This includes Wooden Bats