Value of AU coins

Had a general question.

When the catalog list values for XF and MS60, how do you value a AU coin?

I have a couple of extra 1900H Hong Kong cents, XF is listed at $18 and the MS60 is listed at $100. Opinions welcome.

https://www.ngccoin.com/price-guide/world/hong-kong-cent-km-4.3-1879-1901-cuid-1130888-duid-1409704

I'd just take the difference between the two values, divide it by 3 and add that to the XF. It tends to be a fair estimate.
Loruca

Krause (NGC) are catalog vaues, not real selling/buying prices

Thanks loruca!

Yes I am aware that catalog values are not what the coins normally sold and bought for. But there are many people who trade based on catalog values. I even met a dealer who sold coins as a percent of catalog values.

Here is a good site for values:
https://www.ma-shops.com/index.php?lang=en&curr=USD&save=1