I accumulated 153 since 2013 of these and was thinning the herd. This has the doubling and both die markers. Next is obverse die marker, die gouge next to lip at this precise angle... ...and the die crack on the roof above column 2. I have gone through half of these so far but this is the only one found with doubling. Enjoy, gentlemen!...(and gentlewomen)...Spark
Sorry, what's doubled here? I find these single-squeeze doubled dies to be so hard to tell what's going on, so I don't pay any attention to them. If you need that much magnification, is it worth it...?
There are 8 reverse varieties listed at Wexler, the doubling is the left side of col. 7, next to Lincolns' left arm. Over the years, Wexler has amended his listings and what remains, as this one has, is obviously considered worth listing...Spark