Here is another addition to my Lindy Pen collection. The top one is the new one, a Auditors Shorty #450F with the gold pocket clip, bottom one is a Utility 460m with the silver pocket clip. As with all Lindy stick pens these were made to be non-refillable but if you take the back off, a Penatia refill will work. I just put a new refill in it and it works fine. Lindy was a top seller in the last 50s, 60s and 70s. Made in California till the early 80s when the company was sold to the Blackfoot Indians, moved to Montana and is no more. Lindy was also one of the first pen companies to have up to 13 colors. I do remember the counter displays and all those colors. Add them to your collection.