Thanks, Edwardian, trelbig, and SKB.
Lew, the value system is used mostly on this site since it was developed primarily for the guns most of interest to this site. The data used is auction numbers - pretty close to a pure market. Since this is not intended to represent a "price" (amount agreed to by a willing buyer and willing seller), it does not pose any accuracy level. It was developed to "jump start" understanding of market value of Brit/Continental SXS guns from 1890ish to 1960ish. The definitions are intentionally simplified - no need to overthink it. There are five layers of BV level based charts, each with nine OQ grades vs nine CC levels; 405 pigeon holes.
Edwardian is ultimately correct in how one must decide on a willing buyer offer. However, my system will give you an objective starting point relative to the market. While never meant to supplant experience based intuition, it does offer a framework for information organization. That Edwardian's intuition and my system are very close should not be a surprise, rather mutual confirmation (same answer from two different methods).
Questions?
DDA
