And if left untreated, permanent damage would ensue. I don’t think you actually believe the first coin is preferable.
I am going to ask you a favor, @ Exactly. The crud that was on that coin was going to promote corrosion. Removing it halted the process. One can avoid buying coins that have been conserved. That is your choice. One should refrain from criticizing other people’s choices, especially when their motive might be to boost their material at the expense of others. You can praise your preferences to the stars so long as you leave others out of it.
So does SEGS guarantee in writing the authenticity and grade, or your money back? NGC and PCGS do, although they do their best to try to fudge on that. There's more than one reason to go with NGC and PCGS, since both have become a little full-of-themselves lately as far as grading. Both NGC and PCGS command a much better value for the coin in the marketplace than SEGS. So please tell me why you are sending the coin to SEGS and not NGC or PCGS? Just wondering.
Although I've never tried to obtain a refund for believed improper grading from the firms you prefer, my interpretation is that theirs isn't a viable refund policy of funds, relative to the retail pricing schedules published by the firms. Yes, their resale values are greater than SEGS, but I'm just interested in a properly graded coin, which I've found more often not necessarily in your preferred firms slabs. Would you pay the ~$3250 for this coin graded MS65?: https://www.ebay.com/itm/1907-20-Saint-Saint-Gaudens-PCGS-MS65/401738881042?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=20160811114145&meid=27e26d9925ec4a5aa3465f549f4eaf8c&pid=100667&rk=5&rkt=8&sd=113710105903&itm=401738881042&_trksid=p2045573.c100667.m2042 I believe you'll find many more similar offered on prominent sales sites. JMHO