Nice one! I've found maybe a dozen or so over the last 4 years, so they're by no means common, but unfortunately in circulated condition not worth a fortune.
They aren't very rare unless they are UNC. I've found prob 30-40 over the years, but I don't date search anymore so I haven't found one in a while. Still they are cool! I wish the Lincoln dbl dies were that easy to find. I have found a 72 and 95 of the Lincolns. The 72 was a really lucky score - don't turn up too often.