Do you do anything "special" to identify your basses? Here's what I do.... I keep a spreadsheet that details when I bought it, who / where I bought it from, what I paid for it, and all of the physical attributes (woods, electronics, etc). I even have a version of the spreadsheet on my handheld. If I sell a bass, I note that on my spreadsheet as well. On all my basses, EXCEPT the two I most recently sold, I also etch the purchase info on the inside of the control cavity cover. I figure that way if the person who has the bass after me wants to know anything about the history of the bass, they have it. Funny thing about that is I have no intention of ever selling at least 3 of my 4 current basses. What do you do to "document"?