I add the 1 when I add a different scan for a particular post (using the [pic][[/]/pic] method) that I don't want to use again. All I do is drop the 1 to bring back the original scan.

Here is a picture (not mine) of the coins

http://cgi.ebay.com/1984-UNC-Olympic-Silver-and-Gold-Commemorative-3-Coin_W0QQitemZ200201405704QQihZ010QQcategoryZ39471QQssPageNameZWDVWQQrdZ1QQcmdZViewItem