I have owned several Randall #1's and would like to know what the shallow cut out is on top of the blade, just in front of the hilt, opposite of the choil. It isn't ground into the Model #14, 15, or the #5 (which is very similar to the #1 but for outdoor use versus fighting). It has been on this model for as long as the model #1 has been in existance. I know, I know, I should call the Randall shop, but I know you smart people will know also. Thanks.