I picked up one in similar condition last year..........
The SCS&W 4th Ed. published this year puts a premium on Model 10s with;
a 2" barrel = 20% premium
round butt adds an extra $50-100 in higher condition grades......
over the "Exc." market value of $400 and "VG" of $350.
putting your gun's market value in the $470 to $580 range.
You done good