Absolutely! seems to me that a fantastic piece of work like that should be worth so much more than the market is saying right now. Keep it if you can!Nice! Looks like a real player!
I assume it's not gold-plate and it's in about the 12xxx serial range?
My guess (only because of briefly researching the SML marketplace recently) would be that if it's got some decent leftside bell engraving and the pads have some life in them you might get around $1000-1200. Only a guess. Someone who tries it in person might go a lot higher.
I love the patina! Just lovely!