Bill couldn't remember if it has half stops or not. Here are the specs. that Bill was kind enough to send me. This is actually the certificate of the sale. It has a 3 inch blade. Also included is the leather slip sheath that Gary Graley made.
Knife Maker: Bill Vining
Description: Bullett Pattern Slipjoint
OAL Length: 7”
Blade : CPM154 Cm
Bolsters: 416SS
Liners: 410 SS
Handles: Premium Blue Crackle Mammoth Ivory
Knife was completed on November 14th, 2008
Knife Care
The best way to keep your knife looking new is
to apply an occasional coat of Renaissance wax. Please follow the instructions on the container
DO NOT USE ANY POLISH WITH FINE ABRASIVES.
Please store in a cool dry place. 
Do not store this knife in a leather sheath. 

Warranty
 This knife is guaranteed against workmanship and defects for as long as I am able to make knives.
As with any natural handle materials, over time they may shift, shrink, expand, warp, or crack depending on the environment. Warranties are not extended to natural handle materials. I will however make best effort to ensure you are completely satisfied with your purchase.