I bought 2 pencils on Ebay, one was an Eversharp ring top and the other was an unknown. Some of you might have seen the listing and you couldn't tell what anything was because of the poor photo. However, when I got the pencils the ring top was excellent and has the original ribbon. The other pencil was a curiosity. The machine engraved pattern was like the Eversharp Dart pattern, the pencil is 2-3/4" long, and has a propel/repel mechanism using very thick lead. At first, I thought there weren't any markings on it but then I saw the AXT monogram and it's the only marking. So, the question I have is when did Alonzo Cross invent the propel/repel mechanical pencil?