Auction glossary

Paddle number

Also called: bidder number, paddle, bidding number, registration number

A paddle number is the number assigned to a registered bidder for a sale, shown on a numbered paddle in the room or attached to their online account, so that the clerk can record every bid and the winning buyer against a number rather than a name.

The paddle number is the clerk’s answer to a practical problem: in a fast live sale there is no time to write down names. Each registered bidder receives a number, printed on a paddle they raise to bid, and the clerk records bids and the winning buyer by number. After the sale the numbers are matched to the registration records to produce invoices. Online bidding platforms do the same thing invisibly, assigning every registrant a bidder number for the sale and recording each bid against it.

Registration

A bidder gets a paddle number by registering for the sale: giving a name, address and contact details, accepting the conditions of sale, and in many auction houses providing identification and a card or deposit. For firearms and some other categories the registration also collects licences. The registration record is what turns a paddle number back into a person, so it needs to be accurate, and it is the raw material of the auction house’s client list.

The limits of the paddle-number model

Paddle numbers identify bidders within a sale. They do not, on their own, connect a bidder across sales: paddle 112 in March and paddle 87 in June may be the same collector, and traditional auction software, built around the paddle number, has no easy way to know. That is why a customer list exported from a clerking system gives you names and numbers but not what each person bid on over time. An auction house CRM sits behind the paddle number with a permanent client record, so that every bid, purchase and underbid accumulates against the person rather than the number. We discussed the difference at length in AuctionFlex alternatives.

Paddle numbers in a mixed sale

In a modern live sale the auctioneer takes bids from the room, from phone bidders, from the absentee book and from online bidders at once. Each needs a number, and the clerk console should show them all in one stream so that the hammer price is recorded against the right one. Circuit’s live auction software assigns the numbers, shows the clerk which channel each bid came from, and records the buyer against the lot without anyone reading a paddle across a room.

Frequently asked questions

Do I need a paddle number to bid online?

Yes, though you may never see it. When you register for an online sale the platform assigns you a bidder number for that auction, and every bid you place is recorded against it. The auction house sees the number on the clerk screen and your name in the back office.

Is the paddle number the same at every sale?

Usually not. Most auction houses issue paddle numbers per sale, starting from a fixed number, so your number on Saturday will not be your number next month. Some platforms keep a permanent customer number behind the per-sale paddle number so that your history is in one place.

What happens if a paddle is misread?

The clerk records the wrong buyer and the invoice goes to the wrong person. Good practice is for the auctioneer to call the number aloud when the hammer falls and for the clerk to confirm it on screen. Online bids avoid the problem because the platform records the bidder automatically.

See how this works in Circuit

Circuit Auction runs timed and live auctions on your own website, with the catalog, bidding, invoicing and consignor settlement in one system. Book a demo or browse every feature.

Last updated October 20, 2026

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