The uni5-550 is one of those Mitsubishi models that I got to know gradually over the years. It started with the orange ring version on Yahoo Japan Auctions, without a box. I was in my early ‘I just need one of each design series’ phase and for all intents and purposes, I thought this was it: a single model in 0.5mm.
What was interesting was the 12-sided lattice grip design, which seemed to be shared with at least 2 other Mitsubishi models, BOXY The Stick and a Castell XF-303 (aka Mitsubishi U-303).
Years passed and suddenly I saw a YELLOW ringed version. Same old 0.5; just a different ring. OK, better grab it then.
And I just knew: if there were two colors, then there was probably at least one more. Trouble was, the uni5-550 wasn’t well documented; I hadn’t seen it in any catalogs. I’d only learned about the model number through ‘Tegu’s Stationery Blog’, which documented a yellow ring version.
In the end, I got the last color, a blue ring, through Elton, aka Singapore Mechanical Pencils. And now here they are, united at last.
