The Auction Platform Built for
Coin & Collectibles Dealers
Run professional coin, currency, and collectibles auctions with confidence. From catalog preparation and grading service integration to live bidding and settlement, Flow handles the complexity so you can focus on selling.
Auctioneer Agent
Automates cataloging, generates descriptions from grading data, and suggests reserve prices.
Operations Agent
Handles shipping labels, inventory reconciliation, and consignment intake processing.
Finance Agent
Automates invoice generation, settlement calculations, and payment reminders.
Support Agent
Answers bidder questions about lots, shipping, and payments—24/7.
Thousands of lots, every week.
It adds up fast.
Cataloging, grading, photographing, clerking, invoicing, shipping, settling—for every single lot. Multiply that by thousands, every week, and even the best teams start dropping balls.
Meet your auction
command center
From lot intake to consignor settlement, manage your entire operation on one platform. Every tool your team needs, working together.
Run thousands of lots without breaking a sweat
Set up timed, live, or hybrid auctions with custom bidding rules. Auto-extend, reserve pricing, and real-time bidder monitoring—all built for high-volume weekly sales.
Explore Auction ManagementCatalog, grade, and photograph at scale
Bulk import thousands of lots from CSV or grading services. Barcode scanning, photo management, and direct NGC/PCGS/CAC integration keep your pipeline moving.
Explore Inventory
Capture every bid in real time
Purpose-built clerking interface for live auctions. Record floor, phone, and online bids simultaneously with instant lot resolution and buyer assignment.
Explore Clerking
Ship hundreds of packages a day, not a headache
Generate labels in bulk, shop rates across carriers, and track every package automatically. Declared-value insurance and delivery notifications built in.
Explore Shipping| Tracking | Buyer | Carrier | Status |
|---|---|---|---|
| 9400111... | R. Thompson | USPS Priority | Delivered |
| 1Z999AA... | P. Lancaster | FedEx 2-Day | In Transit |
| 1Z999AB... | J. Wilson | USPS Priority | In Transit |
| 1Z999AC... | E. Chen | UPS Ground | Label Created |
| 1Z999AD... | M. Garcia | FedEx Overnight | Delivered |
Drive collector engagement with built-in marketing
Email campaigns, social media scheduling, and SEO tools designed for auction houses. Target the right collectors with the right lots at the right time.
Explore Marketing| Campaign | Status | Sent | Open Rate |
|---|---|---|---|
| Summer Auction Catalog | Active | 3,245 | 42.5% |
| VIP Pre-Auction Preview | Scheduled | — | — |
| Auction Closing Reminder | Active | 1,875 | 68.3% |
| New Consignor Welcome | Active | 142 | 94.2% |
| Campaign | Status | Sent | Open Rate |
|---|---|---|---|
| Summer Auction Catalog | Active | 3,245 | 42.5% |
| VIP Pre-Auction Preview | Scheduled | — | — |
| Auction Closing Reminder | Active | 1,875 | 68.3% |
| New Consignor Welcome | Active | 142 | 94.2% |
| Campaign | Status | Sent | Open Rate |
|---|---|---|---|
| Summer Auction Catalog | Active | 3,245 | 42.5% |
| VIP Pre-Auction Preview | Scheduled | — | — |
| Auction Closing Reminder | Active | 1,875 | 68.3% |
| New Consignor Welcome | Active | 142 | 94.2% |
Invoices that generate themselves
Auto-generated invoices with buyer's premium calculations, tax handling, and payment tracking. Send professional invoices seconds after the hammer falls.
Explore Invoicing| Invoice | Buyer | Total | Status |
|---|---|---|---|
| INV-10456 | R. Thompson | $3,725.50 | Paid |
| INV-10457 | P. Lancaster | $1,250.75 | Partial |
| INV-10458 | J. Wilson | $5,875.25 | Past Due |
| INV-10459 | E. Chen | $895.50 | Pending |
| Invoice | Buyer | Total | Status |
|---|---|---|---|
| INV-10456 | R. Thompson | $3,725.50 | Paid |
| INV-10457 | P. Lancaster | $1,250.75 | Partial |
| INV-10458 | J. Wilson | $5,875.25 | Past Due |
| INV-10459 | E. Chen | $895.50 | Pending |
| Invoice | Buyer | Total | Status |
|---|---|---|---|
| INV-10456 | R. Thompson | $3,725.50 | Paid |
| INV-10457 | P. Lancaster | $1,250.75 | Partial |
| INV-10458 | J. Wilson | $5,875.25 | Past Due |
| INV-10459 | E. Chen | $895.50 | Pending |
Know where every dollar is, in real time
Real-time AR tracking, automated consignor settlements, and detailed commission calculations. Reduce payment processing fees and accelerate cash flow.
Explore FinancialsAutomated payouts and escrow management
Customizable fee structures, automated payment processing, and escrow management. Reduce processing fees and accelerate your cash flow.
Explore Billing EngineProtect your auctions from bad actors
AI-powered detection of shill bidding, bid manipulation, and suspicious patterns. Automatic risk scoring and real-time alerts keep your auctions fair.
Explore Fraud PreventionData-driven decisions for every auction
Revenue dashboards, bidder behavior analytics, and lot performance tracking. Understand what sells, who buys, and how to optimize your next sale.
Explore AnalyticsKnow your collectors inside and out
Custom tags, engagement scoring, and 360-degree buyer profiles. Track every interaction across auctions, invoices, and communications.
Explore CRMThree ways to reach collectors
Your branded auction site, the Flow Marketplace, and native mobile apps—all powered by one platform.
Your brand, your domain, your auction site
Launch a professional auction site that looks and feels like yours. Custom domain, your logo, your colors—collectors see your brand, not ours. Built on Flow's infrastructure so you get enterprise performance without the enterprise build.
Learn more
Automate the routine, focus on impact.
Flow makes it easy to automate the routine, removing friction from daily auction operations and unlocking time for more meaningful work.
Multi-Format Auctions
Run timed, live, or hybrid auctions with custom bidding rules and anti-sniping protection.
Auto-Extend Bidding
Automatic bid extensions prevent last-second sniping and maximize final sale prices.
Photo Management
Bulk upload, auto-resize, and watermark lot images with drag-and-drop simplicity.
Bulk Lot Import
Import thousands of lots from CSV, spreadsheets, or directly from grading services.
Multi-Format Auctions
Run timed, live, or hybrid auctions with custom bidding rules and anti-sniping protection.
Auto-Extend Bidding
Automatic bid extensions prevent last-second sniping and maximize final sale prices.
Photo Management
Bulk upload, auto-resize, and watermark lot images with drag-and-drop simplicity.
Bulk Lot Import
Import thousands of lots from CSV, spreadsheets, or directly from grading services.
Automated Emails
Winner notifications, outbid alerts, and shipping updates sent automatically.
Secure Payments
PCI-compliant payment processing with ACH, wire, and credit card support.
Bulk Shipping
Generate labels for hundreds of packages in minutes with rate shopping across carriers.
Fraud Detection
AI-powered monitoring flags suspicious bids and accounts before they cause harm.
Automated Emails
Winner notifications, outbid alerts, and shipping updates sent automatically.
Secure Payments
PCI-compliant payment processing with ACH, wire, and credit card support.
Bulk Shipping
Generate labels for hundreds of packages in minutes with rate shopping across carriers.
Fraud Detection
AI-powered monitoring flags suspicious bids and accounts before they cause harm.
Built for enterprise,
secure by design
Enterprise-grade infrastructure trusted by the industry's largest auction houses. Your data, your buyers, and your transactions are protected at every step.
A robust platform to help you deliver exceptional auction experiences
White-Label
Your brand, your domain, your auction site
Mobile Apps
Native iOS and Android for collectors
Marketplace
Reach collectors across the Flow network
API Access
Full REST API for custom integrations
Grading Integration
NGC, PCGS, and CAC verification
Payments
ACH, wire, and card with low fees
Notifications
Real-time alerts for bids and activity
Reports
Export auction data and financials
Custom Fields
Extend lot data with your own fields
Audit Trail
Full history of every action and change
Station
Integrated with the tools you already use
Grading, payments, shipping, and more
Books
