The focus of this blog in on items that are similar to,  or match screen used items on I Love Lucy and not on original props. If you are looking for original props with COA I recommend reading the following article before making a decision to purchase:

http://www.originalprop.com/blog/2013/04/20/revisiting-ellis-props-graphics-certificates-of-authenticity-coas-assigned-to-tv-and-movie-props-set-pieces-costumes-circulating-in-the-marketplace/