Referred to as a "notch" in the WC testimony of Lyndal Shaneyfelt (4H281):
Mr. EISENBERG. Now, Mr. Shaneyfelt, based upon Exhibit 133A, upon your reproductions of Exhibit 133A, consisting of the Exhibits Nos. 746 A through E; and upon your photograph of the rifle, Exhibit 747, and your simulation of 133A, Exhibit 748---have you formed an opinion concerning whether Exhibit 139, the rifle used in the assassination, is the same or similar to the rifle pictured in Exhibit 133A?
Mr. SHANEYFELT. Yes; I have.
Mr. EISENBERG. Can you give us that opinion?
Mr. SHANEYFELT. Yes; I compared the actual rifle with the photograph, Exhibit 133A, and with the photographs that I prepared from Exhibit 133A, as well as the other simulated photograph and the photograph of the rifle, attempting to establish whether or not it could be determined whether it was or was not the same.
I found it to be the same general configuration. All appearances were the same. I found no differences. I did not find any really specific peculiarities on which I could base a positive identification to the exclusion of all other rifles of the same general configuration.
I did find one notch in the stock at this point that appears very faintly in the photograph, but it is not sufficient to warrant positive identification.
And referred to as a "chip" in the HSCA testimony of Cecil Kirk (2HSCA429):
Mr. FITHIAN . Then I take it, it is your testimony that the chip or the defect is sufficiently unique, with the corners or whatever, that spotting it in each of the pictures at least gives you the confidence that that rifle you are holding is the rifle that was photographed?
Sergeant KIRK. When I match that up with the scientific data Mr. McCamy has obtained from measuring it, this has to tilt the scales in the direction, yes, indeed it is the same rifle.