Hi Dave. Chips 1,2 and 4 from YOUR scan are the same type. Seymour calls them Inlaid Initial Large Center. These are also the cheapest, most common variety. Your 3rd chip, the "W", is called the Initial Inlaid Stencil. This chip is, according to Seymour, the better type.

Below are 3 chips. The first is called Initial Inlaid Small Center. The other two are the Stencil variety. Seymour considers these 2 types of equal value. Personally I think the first chip in my scan is, by far, the best.

I only mention this because I'm not sure what you're collecting. Is it all letters of the alphabet, regardless of type? Do you want different colors of the same letter? Having said all that, if you want the 3 pictured, let me know. I have your address.