I got out the microscope briefly and mine appears to be a match to both the HA and PCGS coins linked above. Comparing the HA and PCGS images side by side I would say the doubling/tripling is identical. However, HA has the die chip in the second S and the PCGS one does not. I'm thinking the second chip formed after the first, and it's just different die states. I recall seeing one where the second chip becomes a die crack through ATE and to the rim. Might be a project for further research.
Yes you should join BCCS. $20 a year, 4 quarterly journals with stuff you won't find anywhere else.
Edit: Here's one with the same tripling but neither S has the die chip.
https://coins.ha.com/itm/barber-qua...bnail-071515Here's one with chips in both S's and the die crack to the rim, but no discernible doubling. There's three more on PCGS with the same thing.
https://www.PCGS.com/cert/38237275