The raspberry pi foundation also can ' t seem to manage to make enough of those $ 5 product to anywhere near meet demand so maybe that tells you something . <| sep |> The biggest thing I got from this post is that Aui is 9 k mmr in writing TLDRs . They were so succinct but got the entire point across without feeling like an information diarrhea dump . <| sep |> That ' s a Parker Duofold Junior Streamline in burgundy marble from the early 1930 s . It appears to be missing both the cap and blind cap , but you can probably find replacements for them on ebay if you ' re patient . If the button can ' t be pressed it means the sac is hardened and most likely full of dried ink . It ' s a very easy pen to repair but I wouldn ' t attempt it if you ' ve never worked on fountain pens before .