Thanks guys I thought you would like to see this knife even if it is not a Scrapper. I don't know what it is only that it has the Ratweiler style handle which I think is the best looking of the Rat handles.
Some military units can be really strict about any fixed blade so I don't think that gives us much of a clue about blade length.
For us canuks that has to be one of the most collectible Busse family knives ever.