Agree that older is better with B's. And that one's older. If it were a 20 or a 16, it'd be worth maybe another $100 or so.

A 420 in 20ga was my first double. I was an OU guy before I ever owned a sxs. I was thinking about a brand new 311 (we're talking early 60's, not a lot of choices), but my dad found that 420 for me. $65, including a decent soft case. Recently bought one in 16ga. Nostalgia got the best of me, and it was in unusually good shape. Turns out I shoot it pretty well too! But a Marlin 90 feels svelte and sleek compared to a 420 or 430.