I have never seen a vintage soprano with a high F# or even a front F (except Holton front F).I kind of agree, the horn is 1928-29 with the high F#, just about the best you can get for a vintage Martin with a street price of US$ 1200.- and up. Don't let the grudge about the seller get in the way of having a great horn, even if it doesn't turn out to be the bargain you thought it would be. Sometimes you luck out, sometimes you get what you pay for. At the price you paid, it is not really a rip off, and the alternative is years of remorse of not having "that one horn that got away". I am just playing devil's advocate but maybe you just weigh your losses, give the seller a really bad rating on ebay and enjoy that Martin for years to come.