No I have not personally seen that example. I own a HK-11 white metal in Unc Details with rim damage. It appears to have been made into a jewelry item sometime in the past, as the obverse rims are pinched at 3:30 and 8:30. Otherwise, it would probably grade 62 or 63 and possibly prooflike.
I was going to be in on the 62PL example until it went stratospherically high!
I would love to own a high grade HK-11 white metal example to add to my set. I also own a HK-11c copper in MS 65 RB that was formerly from the famous Ostheimer Collection. I purchased this medal from Jeff Shevlin in 2017.
Thank you for your interest in these very interesting medals struck by George Hampden Lovett. Have you ever been to Fort Sumter off the coast of Charleston, SC? It is a very interesting and powerful location. Just knowing the event that happened there gives you goose bumps being on the island. My late Father-in-law was from Sumter, SC, so we have made (2) trips to Fort Sumter island while visiting my wife's uncles and aunts that still live in Sumter.