TWSBI hasn't sold a red or purple Diamond 580 ALR pen in years, but they have this "Grape" Diamond Mini AL. I hesitated due to its size, but it's nice. I prefer the 580, but I can write well even w/o posting this one. The cap threads on the back and makes it even more comfortable.
It's still large for a pocket pen, and I'm not sure I'd trust TWSBI in a pocket, but it's more portable.
Also can't pass up a chance to show Date Gokoro changing color on different paper.




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