Oversized Onoto-Style Japanese Eyedropper Fountain Pen handmade by Japanese lathe-master Eisuke Sakai. This pen features a Warranted 14K Gold Fine nib made by the legendary Japanese nib master Ginjiro Kabutogi, and is stamped with his initials "G.K." Kabutogi is known as one of the greatest post war nib-masters and his nibs offer an amazingly unique writing experience. This pen was produced by Sakai and G.K. during the 1960's, likely before their Ban-Ei brand was started. This Pen is in great condition. The ebonite body does show heavy oxidation, but this could be removed various ways if desired. Minor scratches and scuffs can be seen on the barrel, cap, and grip section. Please see all photos.

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: Eisuke Sakai Onoto-Style Eyedropper, Oversized
- Year of Manufacture: Unknown, Possibly Early to late 196-'s
- Color: Brown
- Material: Ebonite (Hard Rubber)
- Nib: 14K Gold Warranted G.K. Fine Nib
- Filling System: Eyedropper w/ Shut-off Valve
- Condition Rank: B, Very Good
- 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.