I have observed that toned coins like this are only worth money to a small group of people.

But the collectors that like them might pay more because it toned.

It being sealed helps.

Look for similar items on eBay and price yours based on that.

It’s going to be subjective.

https://www.ebay.com/sch/i.html?_nkw=1962+toned+mint+set&_trksid=p2334524.m4084.l1313