The features that Gerry mentions are nowhere near unique, only a bit hard to locate. They are not hard to locate because they are rare, they are just largely now hidden in collections and not often offered for sale. Plenty of them were made. I recently bought a new unfired 28 gauge one barrel set, 28", double trigger, straight grip gun in a well attended internet auction for a reasonable price, much lower than Ed's ridiculous price. Oh, well, he will probably find an ass for that seat if it sits around long enough.