Re: Wanted Diamond Brand/Globe's/Sterlings/Monarchs and Falcons
About 5 years ago somebody had a pristine Monarch or Sterling that brought $3500 from a northeastern buyer.
Travis Matte has been trying to sell a refurbished (modernized) Sterling D on eBay for a couple of months at $1500 with no takers.
Age, condition, and key govern. A is not a popular key, probaby 4th behind C, D & Bb. If it's mostly original, I'd guess $75 for a non-player, $300-$500 rough, $1,000 good, $2500 excellent. Those are prices fired from the hip, but a general yardstick.