{"product_id":"opus-88-demonstrator-fountain-pen-in-mocha-mousse-pvd-2025","title":"Opus 88 Demonstrator Fountain Pen in Mocha Mousse PVD 2025","description":"\u003cp\u003eThe Opus 88 Demonstrator fountain pens continue to elevate the eyedropper tradition with fresh and unexpected color combinations. Precision-machined from solid bar stock resin, each pen features a reliable #6 stainless steel nib and a high-capacity ink chamber designed for serious writers and pen enthusiasts alike.\u003c\/p\u003e \u003cp\u003eFor 2025, Opus introduces the *Mocha Mousse* special edition—an elegant, dessert-inspired palette. Translucent warm beige resin is accented by a rich cocoa brown grip and blind cap, while the top finial is finished in a subtle almond hue. The clip and #6 stainless steel nib are treated with black PVD for a modern, cohesive aesthetic.\u003c\/p\u003e \u003cp\u003eThe eyedropper-filled barrel holds a generous 4ml of ink, regulated by a central shut-off valve system. This rod-and-valve mechanism ensures controlled ink flow and prevents leakage during travel or extended storage, making it a more secure and reliable alternative to traditional eyedropper pens.\u003c\/p\u003e \u003cp\u003eThe Opus 88 Demonstrator in Mocha Mousse is beautifully boxed and includes a glass eyedropper for easy filling.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eOpus 88 Demonstrator Fountain Pen in Mocha Mousse 2025 Specifications\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePen Material: Resin\u003c\/li\u003e \u003cli\u003eNib: Stainless steel #6 nib; Black PVD finish\u003c\/li\u003e \u003cli\u003eTrim: Black PVD-plated trim\u003c\/li\u003e \u003cli\u003eFilling System: Eyedropper (includes glass eyedropper) with shut-off valve to prevent leakage\u003c\/li\u003e \u003cli\u003ePen Length Closed: 5.8 in. \/ 147.3mm\u003c\/li\u003e \u003cli\u003ePen Length Open (Cap Off): 5.44 in. \/ 138.2mm\u003c\/li\u003e \u003cli\u003ePen Cap Length: 2.5 in. \/ 63.5mm\u003c\/li\u003e \u003cli\u003ePen Body Max Diameter: 0.58 in. \/ 14.7mm\u003c\/li\u003e \u003cli\u003ePen Grip Section Diameter: 0.48 in. \/ 12.2mm\u003c\/li\u003e \u003cli\u003ePen Total Weight: 0.9 oz \/ 25.51g\u003c\/li\u003e \u003cli\u003eInk Capacity: ~3.5ml – 4ml\u003c\/li\u003e \u003cli\u003eGift boxed with instruction booklet\u003c\/li\u003e \u003cli\u003eMade in Taiwan\u003c\/li\u003e \u003c\/ul\u003e","brand":"Opus 88 Pens","offers":[{"title":"Medium","offer_id":43563377721483,"sku":"250401M","price":150.0,"currency_code":"USD","in_stock":true},{"title":"Fine","offer_id":43563377754251,"sku":"250401F","price":150.0,"currency_code":"USD","in_stock":true},{"title":"Extra Fine","offer_id":43563377787019,"sku":"250401EF","price":150.0,"currency_code":"USD","in_stock":true},{"title":"Elastic Fine","offer_id":43563377819787,"sku":"250401FF","price":150.0,"currency_code":"USD","in_stock":true},{"title":"Elastic Extra Fine","offer_id":43563377852555,"sku":"250401EFF","price":150.0,"currency_code":"USD","in_stock":false},{"title":"Broad","offer_id":43563377885323,"sku":"250401B","price":150.0,"currency_code":"USD","in_stock":true},{"title":"1.5mm Stub","offer_id":43563377918091,"sku":"2504011.5","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1693\/8459\/files\/opus-88-demonstrator-fountain-pen-in-mocha-mousse-pvd-2025-258.jpg?v=1759270362","url":"https:\/\/goldspot.mom\/products\/opus-88-demonstrator-fountain-pen-in-mocha-mousse-pvd-2025","provider":"Goldspot Pens","version":"1.0","type":"link"}