60,000 exact searches a month for "Old Coins" - So I guess the domain could provide some SEO value to someone out there.
Even something like cars.co.in wouldn't be that appealing to most and not get more than $xxx-$xxxx at best, imo. So I couldn't say this has much value.
Maybe low-mid $xx if lucky, to an enduser big on keyword domains. Maybe a little more if they like the play on co.in (hack of 'coin'?)
^ Optimistic appraisal.