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Platinum 3776 Century Fuji Unkei Unkai Fountain Pen
Colour: Transparent
· Ref: PNB-650FU-L-61-F
£435
VAT incl. · Free express delivery
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Authenticity
Authorized Platinum dealer
Warranty
Official Platinum warranty
Shipping
Free · DHL Express
Returns
30 days from delivery
Overview
The Platinum #3776 Century Unkai captures Mount Fuji’s sea of clouds in a carved, transparent barrel beneath a translucent brown cap with a matching grip.
Unkai means sea of clouds, the landscape that brings Platinum’s Fuji Unkei series to a close. Lens-cut facets and carved grooves give the clear resin barrel the appearance of clouds gathering in layers around Mount Fuji. Their reflections change with the light and viewing angle, while the brown cap and grip recall the mountainside illuminated by the morning sun.
A Mount Fuji-shaped nut is visible inside the dome, a signature detail of the Fuji series. The #3776 name comes from the mountain’s height of 3,776 meters. An engraved serial number on the dome identifies each pen in the worldwide edition of 1,500.
Hand-made in Japan, Unkai has a rhodium-plated 14k gold nib, rhodium-plated brass rings and a rhodium-plated steel clip. It accepts ink cartridges or a converter for bottled ink, and the Slip & Seal mechanism helps prevent ink from drying while capped.
The cloud-themed box carries the landscape into the presentation. It contains a Converter-700A, one blue-black cartridge and a 20 ml bottle of Fuji-no-Ebizome ink, created for the edition. The ink evokes Mount Fuji at twilight through grape-red and reddish-purple tones with muted green nuances; its appearance depends on the paper and amount of ink. The bottle cap carries a three-dimensional illustration.
Unkai measures 139.5 mm capped, with a barrel width of 15.4 mm, and weighs 20.8 g with the cap. The exclusive box measures 118 mm wide by 200 mm deep by 40 mm high and weighs approximately 290 g.
At a glance
- Lens-cut facets and carved grooves depicting a sea of clouds
- Clear resin barrel with translucent brown cap and grip
- Rhodium-plated 14k gold nib
- Slip & Seal mechanism
- Edition of 1,500 pens worldwide
- Converter and exclusive 20 ml ink bottle included
- Hand-made in Japan
Specs
Body
Finish
Clear carved barrel with translucent brown cap and grip
Material
Resin
Color
Transparent
Trim
Rhodium plating on brass
Nib
Material
Rhodium-plated 14k gold
Mechanism
System
Cartridge / Converter
General
Country of manufacture
Japan
Product
Brand
Platinum
Collection
3776
Reference
PNB-650FU-L-61
Dimensions
Closed length
139.5 mm
Barrel width
15.4 mm
Weight
With cap
20.8 g
Clip
Finish
Rhodium plating on steel
Design
Technique
Lens-cut facets and carved grooves
Motif
Sea of clouds around Mount Fuji
Cap
Seal
Slip & Seal
Edition
Quantity
1,500 pens worldwide
Numbering
Serial number engraved on dome
Compatibility
Cartridges
SPSQ-400 / SPN-100A / SPC-200 / SPG-500
Included items
Converter
Converter-700A
Cartridge
1 blue-black cartridge
Ink
20 ml Fuji-no-Ebizome ink
Presentation
Exclusive cloud-themed box
Box
Dimensions
118 mm W x 200 mm D x 40 mm H
Weight
Approximately 290 g
Manufacture
Method
Hand-made
Questions & Answers
How does the barrel evoke a sea of clouds?
Lens-cut facets and carved grooves create the appearance of layered clouds in clear resin. Light and viewing angle change the reflections, while the brown cap and grip evoke Mount Fuji’s mountainside in the morning sun.
What details connect Unkai to Mount Fuji?
A Mount Fuji-shaped nut is visible inside the dome, a signature detail of the Fuji series. The #3776 name refers to the mountain’s height of 3,776 meters, and the Fuji Unkei series explores the cloudscapes around it.
What comes with Unkai?
The cloud-themed box contains a Converter-700A, a blue-black cartridge and a 20 ml bottle of Fuji-no-Ebizome ink. Created for the edition, the ink evokes Mount Fuji at twilight through grape-red and reddish-purple tones with muted green nuances.
Can Unkai use both cartridges and bottled ink?
Yes. A Converter-700A for bottled ink and a blue-black cartridge are included.
Is each pen individually numbered?
Yes. The edition comprises 1,500 pens worldwide, with the serial number engraved on the dome.
Still have questions?
Talk to a specialist
Verified Reviews
FAQ
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With over 15 years in the luxury market, we guarantee the authenticity and quality of every piece we sell.
Your order arrives brand new in its original Platinum packaging, with all official documentation and the Platinum warranty card, stamped and dated by us.
The warranty covers manufacturing defects. It doesn't cover normal wear and tear or accidental damage — and on watches, it doesn't cover straps, bracelets, or batteries.
Questions about a specific piece? Our specialists are happy to help. [Contact our team →]
Questions about a specific piece? Our specialists are happy to help.
Yes — free DHL Express shipping on all UK orders of £400 or more.
- Orders from £150 to £399.99 ship DHL Express for a flat £9.90
- Orders under £150 ship DHL Express for a flat £19.90
Every order ships with a tracking number, so you can follow your package every step of the way. Shipments are fully insured and delivered by DHL Express with signature required.
Most in-stock orders arrive within 1-2 working days of dispatch.
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Our prices include VAT, and nothing is added beyond the delivery charge shown.
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Need something by a specific date? Tell us and we'll check before you buy. [Contact our team →]
You have 30 days from delivery to return your order.
How returns work. Just let us know and we'll email you a prepaid DHL Express return label — you never have to arrange a shipment or pay anything up front. The return cost is deducted from your refund. If the piece arrived damaged or wasn't what you ordered, the return is on us.
Your refund options.
- Credit (issued as a gift card) — processed almost immediately once your return reaches us
- Refund to your original payment method — typically 5–10 working days, depending on your bank
To qualify for a full refund, the piece must:
- Be unused and in perfect condition, with no signs of wear
- Include its original packaging and outer box
- Include all original documentation, accessories, and the warranty card
- Not be engraved or personalised — custom pieces are made to order and can't be returned
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