
Intake single stamps, sets, collections, and estates with consistent, fast, unified workflows.
Capture condition, catalog numbers, provenance, and varieties using philately-specific attributes and high-resolution media.
Turn structured intake data into clear, trustworthy listings — no retyping, no duplicated work.
Cross-list to your own store, marketplaces, shows, and retail locations with real-time sync and integrated payments.




Replace spreadsheets and scattered tools with one easy-to-use system that helps you organize stamp collection inventory and cross-list items quickly across the collectible resale channels that matter.
Streamline intake, pricing, and listing work while expanding from a physical store to online channels, and stand out by offering a more transparent and reliable buying experience.
Centralize cataloging, documentation, and sales data for unique lots, and reuse structured information across auctions, fixed-price listings, and private sales to increase sell-through.
TWICE uses single-item tracking so each stamp, set, or lot has its own record with condition, catalog references, images, provenance, purchase source, and pricing history. You can mark high-value items, require additional review before publishing, and keep a full audit trail of changes and sales — ideal for rare or certificate-backed pieces.
Yes. TWICE lets you create and standardize custom fields for catalog references (e.g., Scott, Michel, Stanley Gibbons, Yvert), country, issue, face value, watermark, perforations, format, and more. These attributes can power filtering, pricing rules, and listing templates, ensuring consistent descriptions across your inventory.
TWICE is built to handle multiple intake models. You can record consignor agreements, commission structures, and automated payout calculations, alongside outright purchases of estates or dealer inventories. Both models run in the same system, so you always know which items are owned, which are consigned, and how they perform.
You can codify your grading standards into repeatable workflows: required condition fields, mandatory images, and checklists for faults and authenticity. Detailed records, high-resolution scans, and attached certificates help you present transparent listings, reduce disputes, and maintain a consistent reputation with serious collectors.
Yes. TWICE centralizes inventory across your physical shop, shows, warehouse, and online channels. When an item sells or is reserved in one channel, its availability updates everywhere in real time, reducing the risk of double-selling unique stamps and keeping your team aligned on what’s available.