Flow
Opus 88
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Demonstrator
Opus 88
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| Typical price | $124 | $1.55 |
| Price range | $1.21–$177 | $1.44–$177 |
| Collectors who log it | 19 | 281 |
| Filling | Eyedropper | Eyedropper |
| Nib | Bock | JoWo |
| Nib widths | Broad · Extra Fine · Fine · Medium · Stub | — |
| Length capped | 148 mm | 147.6 mm |
| Diameter | 19.7 mm | — |
| Weight | 31 g | 27 g |
| Materials | brass · ebonite / hard rubber · wood · stainless steel | ebonite / hard rubber · stainless steel · acrylic · resin |
| Colourways | 5 |
13 |
| Stocked at | 7 | 3 |
Dimensions are mined from retailer listings — approximate. A dash means no source gave it, not that it is missing.