A vintage Seisakusho Japanese Eyedropper Fountain Pen with a Parley 14K Gold Flex Nib. The nib is stamped with the JIS registration number 3231, which was registered to the company Ishikawa-Kinpen Seisakushô which was rumored to belong to the Japanese nibmeister Kato Kiyoshi. The 14K gold "Parley" nib offers a wonderful flex-nib writing experience. This pen is crafted out of solid hard-rubber, or ebonite, then coated with urushi lacquer. 

This is a rare "Jumbo" eyedropper. These pens were usually only made for those who custom ordered them, and were often for people who suffered from arthritis. At nearly 20mm, the large grip size allowed the user to hold the pen with less discomfort. 

This pen has had the worn out, original cork shutoff valve seal replaced with o-rings. Providing a great alternative to prevent leaks near the back of the pen. 90 day warranty on service work. 

- Manufacturer/Model: Ishikawa-Kinpen Seisakushô Parley Eyedropper
- Year of Manufacture: 1970's to late 1980's
- Color: Black
- Material: Ebonite (Hard Rubber), Urushi Lacquer
- Nib: 14K Gold Osmiridium Parley Fine Flexible Nib
- Filling System: Eyedropper w/ Shut-off Valve
- Condition Rank: (C) Good Condition. Please See Photos and Condition Rank Guide.
- Warranty: 90 days on service work
- Country of Manufacture: Japan

Condition Rank Guide:
-N: Item is in New Old Stock condition (NOS). Shows little to no signs of use apart from some minor handling wear.
-A: Item is in Excellent condition. Micro-scratches can be seen on the barrel, cap, and/or grip section. No noticeable scuffs, chips, or cracks.
-B: Item is in Very Good condition. Minor scratches and scuffs can be seen on the barrel, cap, and/or grip section. No Chips or cracks.
-C: Item is in Good condition. Moderate scratches and scuffs can be seen on the barrel, cap, and/or grip section. Minor hairline cracks not affecting functionality may be present. See photos.
-D: Item is in Fair condition. Heavy scratches and scuffs can be seen on the barrel, cap, and/or grip section. Cracks or chips that potentially affect functionality may be present. See Photos.
-F: Item is in Poor condition. Item is not functional. For parts or repair only.