Model 10s are a dime a dozen. Don't get me wrong. They are fantastic. But you can buy them amazingly cheap, especially if you can find dept of correction turn in guns. About a month ago Outdooor Super Store had them for $209 and free shipping!
These were in pretty decent shape too. SO, if it were me, I'd look for a snub to keep yours company or buy a cheap beater to rework. Keep your heirloom as it is.