No way would I pay much for a red field holdered coin, I have owned quite a few and never paid more than a few dollars over a regular one, in a Paramount holder I couldn't justify more than $20.00 over a published price, anything more, to me is outrageous. I'd say value on a Redfield holdered coin like this should be no more than $150.00 tops, to me. Seeing that one on
ebay for $200.00 is nuts! Don't mean to say the OP is nuts but if I'm paying $375.00 I'd want two of them at least. Just way, way too much $$$ for a coin like this IMO.
EDIT: In hindsight the toning is really quite nice on this coin so paying over $200 isn't really a big stretch, the cost will come back when the silver market invariably climbs again. At $375 though I think you'll be sitting on this one for awhile before you see a profit on it. I have made way worse purchases in my past however, and lost more than $1K on a coin or two.

"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440