TWSBI 580
fountain pen
GenRank Score
30.0
A piston-filling demonstrator fountain pen from Taiwanese brand TWSBI, known for its classic design, large ink capacity, and user serviceability.
Also Known As
TWSBI 580
1 question•1 category
Score History
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Average Rank
#1.0
Median
#1
Range
#1–#1
🏆Top 3 in 1/1 models
Rankings by Model
Claude Sonnet 5 #1