Vintage Ishi-Shoten Yotsubishi Japanese Eyedropper Fountain Pen. These pens were very popular during the first half of the 1900's, but fell out of major use due to the invention of automatic filling systems. However, they still maintained a niche interest during the second half of the 1900's and even till today. This particular pen shows beautiful maki-e artwork depicting a tiger. This pen was likely produced by Ishi-Shoten company sometime in the mid-to-late 1950's. This company would utilize nibs produced by other, often larger companies. As you can see from the photos, this nib was produced by Pilot.

 These pens were designed as eyedroppers, meaning ink was stored directly in the barrel without cartridges or converters. A key feature was the shutoff valve, a small mechanism that prevented ink from leaking during use or travel. This valve allowed users to seal the ink reservoir, ensuring a steady flow only when writing, which addressed issues like burping or dripping often seen in traditional eyedropper pens.

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: Ishi-Shoten Yotsubishi Maki-e Eyedropper
- Year of Manufacture: Late 50's. Underside of nib stamped 833, indicating Showa year 33. Circa August 1958.
- Color: Black, Gold, Red
- Material: Ebonite (Hard Rubber), Urushi Lacquer
- Nib: 14K Gold Extra-Fine Flex - Pilot Made
- Filling System: Eyedropper w/ Shut-off Valve
- Condition Rank: C, Good Condition. Please see photos and condition rank guide. Please note the missing clip as well as the hairline crack in the urushi finish inline with the clip holder.
- 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. No chips or cracks.
-D: Item is in Fair condition. Heavy scratches and scuffs can be seen on the barrel, cap, and/or grip section. May have small chips or cracks. See description.
-F: Item is in Poor condition. Item is not functional. For parts or repair only.