A side area of mine is the collection of look-a-likes (LAL). These are notes that have been made to look like the original issue. These type of notes are usually found under the obsolete/script/ad umbrella of notes, and are mainly found in large size notes and fractional notes. Here is an example that I just received in the mail today from Stacks/O'Mara sale from last month. This is a fourth issue Stanton look-a-like for the Brown & Greely United States Candy Company. This note is seldom seen at auction and is a rarity 6. This note is similar to the one in Milt's auction and also Durkin's sale and is uniquely styled. I wonder how many times this type note was passed as the real thing as it looks very similar to the real fractional Stanton note.
Here are some of the more obvious examples with the look-a-like shown first and a genuine note next to it. Remember, click on the image to get an enlarged scan of the note.