{"product_id":"casascius-xv-brass-serial-0","title":"Casascius XV | Brass | Serial 0","description":"\u003cp\u003e\u003cspan\u003eA one-of-one Serial 0 interpretation of Casascius XV in brass, created outside the original numbered edition and retained in the Finite by Design archive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSerial 0 preserves the visual language and core design of the Casascius XV Brass Edition while reinterpreting the piece in deep 3D relief. The Bitcoin mark, radial fields, lettering, dates, and surrounding details rise from the surface with sculpted depth rather than the flatter engraved treatment of the production edition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe deep engraving is paired with an intentionally aged, old-world finish. Darkened recesses, softened highlights, and subtle variation across the surface give the piece an artifact-like character distinct from the original Casascius XV release.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe reverse carries three concentric rings of binary surrounding the cold-storage field, with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eZERO\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e incorporated directly into the design. The private key is concealed beneath a Finite by Design tamper-evident hologram.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCreated individually over several hours of deep engraving, this piece serves as the singular Brass Serial 0 interpretation of Casascius XV. A corresponding Stainless Steel Serial 0 was created separately.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSerial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 0\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eMaterial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Brass\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 40 mm\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eFunding:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Buyer Funded (unfunded)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eOriginal Edition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 15 pieces (01\/15–15\/15)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eCollection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Zero Collection\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eOrigin:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Heritage Collection · Casascius XV\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBitcoin is not included. The piece is delivered unfunded and may be funded by its collector after receipt.\u003c\/p\u003e\n\u003cp\u003eCasascius XV is an independent Finite by Design tribute and is not an official Casascius product or collaboration.\u003c\/p\u003e","brand":"Finite By Design","offers":[{"title":"Default Title","offer_id":67555484303660,"sku":null,"price":1000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/9358\/4428\/files\/IMG_9121.jpg?v=1790870175","url":"https:\/\/finitebydesign.com\/products\/casascius-xv-brass-serial-0","provider":"Finite By Design","version":"1.0","type":"link"}