To display my collection, I purchased a 153 ball display from
http://www.homeplateheroes.com/Baseb...Thumbnail.html - The displays are really nice, well made but on the expensive side. I looked high and low for a display case and I think Home Plate Heroes are one of the best. Around the holidays they offer decent deals and really great deals when the appear at shows (they don't want to have to pack the displays). My case was an item a customer backed out of and was on sale. The display is on my basement wall between two windows that are just above grade. Obviously, the balls should be kept out of direct sunlight. In my opinion any fading of signatures was due to the force at which the player signed and the ink reacting to the leather. Bud Selig, Bob Horner and Gaylord Perry have just about faded away, especially the Horner. Currently, I try to stay away from getting balls signed. If I do decide to get a ball signed, I think I will try on of these pens on a lesser player.
https://www.pigmamicron.com/history