I saw one years ago which I deeply regret not buying. It was marked DS, had the right barrel with Damascus pattern and the left with Twist. It had dolls head and cocking indicators. I passed because it was a well worn project gun needing total refinishing. I figured at the time it was an employee gun taken out of the plant one parts at a time like the Johnnie Cash song about the 55-56-57-58-59 Cadillac with one fin and one non fin tail light. Since then I have seen two other Lefevers with a twist and Damascus barrel combination which had been blued by the factory. I guess when an order came it it was made with parts on hand when money was tight or there was a rush order. We may think of Twist or Damascus barrels as less than steel but others years ago would not.