You took the words right out of my mouth, Fairchaser. If you know how many you have or count the same number twice in a row, you don't have nearly enough.
Since starting my quest to reduce my collection last year discovered I have 4 more than when I started.
However, since making a book of what I own, scope, optics, serial number, etc, have learned to check my book before buying anything to make sure I don't buy another duplicate.
Don't ask me how I learned this lesson, LOL