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SKU
C-M7445270
TWSBI Obsidian Fountain Pen
£140.00
In stock
Experience refined writing performance with this beautifully crafted TWSBI fountain pen, designed with the brand’s signature balance of modern engineering and classic aesthetics. The pen features a deep marbled resin body in swirling black and grey tones, giving each piece a unique pattern. Rose-gold accents seen on the trim, threaded connector, and precision-engraved nib add a warm contrast and elevate the pen’s overall sophistication. The cap, fitted with a matching rose-gold clip, secures tightly to protect the nib and maintain portability. The grip section transitions smoothly into the nib for comfortable, controlled writing. As with TWSBI’s well-known engineering philosophy, the pen is built for reliability and durability, combining premium materials with exceptional attention to detail.
A perfect choice for everyday writing or as a display piece in any collection, this model delivers a harmonious blend of craftsmanship, elegance, and functionality reminiscent of TWSBI’s lines.
Key Features
- A deep marbled resin body in swirling black and grey tones
- Twist action piston fill mechanism
- Rose-gold-plated stainless-steel nib (Similar to the TWSBI 580 nib in size)
- TWSBI logo button on end cap
- TWSBI presentation box
- Lifetime manufacturer warranty
- Dimensions (Closed): L 140mm x D 12.3mm
- Weight: 31g
Delivery Information
All orders placed before 3pm Mon-Fri are despatched the same day (except on a bank holiday), even if your order has personalisation. Orders placed after 3pm, at the weekend or on a bank holiday are despatched next working day.
UK: We use a Royal Mail tracked service. Standard delivery is free over £30 (£2.50 charge for orders under £30) and takes 2 to 5 working days, Premium is £3.50 and takes 1 to 2 working days. Next working day is £6.95 and is delivered by 4pm (requires a signature).
International: We deliver worldwide with a standard and express service. Please visit our international website
Returns Information
Please return any unwanted items within 21 days of purchase to be eligible for an exchange/refund. Items purchased for Christmas can be returned up until Friday 23rd January. The item must still be in a re-saleable condition and returned with proof of purchase. Items that have been personalised cannot be returned unless they are faulty.
Should you receive a damaged or incorrectly dispatched item, please inform us within 7 days of receipt, so we can advise you on the return of the item. Call 0208 731 8610 or email info@penheaven.co.uk. If a faulty or incorrect item is returned, we will refund your postage up to the cost of 1st class recorded Royal Mail. If you are sending items from abroad, please call us for a delivery quote





