The Scalper is a smaller drop point version of the earlier
Waco that used Mr. Dalton's "Bar Lock". The Bar Lock is
totally ambidextrous. All of the Scalpers were drilled on both
sides for the pocket clip, so the clip could be switched for left
handed carry. I believe the Scalper was a very small run.The
earliest indication that I have of their existence is an email
from the Daltons on 09 April 2001. Additional emails indicate
that the Dalton shop was working on the next model (the Asp) on
13 April. It appears that the Scalpers were made for only a few
weeks. A total of 204 Scalpers were made according to a recent
email from Mrs. Dalton. This makes the Scalper one of the
smallest model runs since before 1998. The dimensions are as
follows:
Overall Length: 7 - 13/16"
Blade Length: 3 - 3/16"
Blade Thickness: 1/8"
Handle Thickness (not incl. buttons or clip): 1/2"
There were only six variations of the Scalper made that I am
aware of, and three of those variants were extremely
limited runs. The two most common variants were the ones with
beadblasted drop point blades and the ones with 2-tone (satin
flats and beadblast bevels) drop point blades. All of the
Scalpers had black anodized handles. It appears that the serial
numbers started at 001 and ran through xxx. As far as I know, all
of the Scalpers had the standard Dalton logo etched on the blade.
Here is a picture of a 2-tone version:

The next most common version was a special run requested by Josh
at Pioneer Valley Knife and Tool. This special run of only fifty
pieces was engraved with the "FTW" and the winged
skull. I think that all of these had beadblast blades.

There were four Scalpers made with damascus blades. These four
pieces also has a top swedge that was not incorporated into any
of the other five variants. It is interesting to note that the
third piece was sent to a dealer who apparently didn't check it
closely - he sold it and sent it out as a regular piece. He
didn't know it was damascus !!! My damascus variant has high
polished pivot and pivot screw and a polished and rainbowed
pocket clip. Here is a picture of a damascus Scalper:

There were also two Scalpers made with modified satin finished
clip point blades. These two blades were hand ground. A young
lady in Kentucky owns the other one.

The sixth variant was a very small number of full satin bladed
Scalpers.