I know that on the base of the blade of the Buck 110 their are symbols, or markings that are different. Some have two dots. Some have an arrow. Some have lines. I know they have to do with the year they where made, but how do I know what symbol is from what year? do some symbols mean the knife is from the custom shop, or are limited runs?  How do I find this out? Does anyone have a chart I can copy? Are some worth more than others?

This buck knife I customized has an arrow pointing to the right. What does that mean to me?