BidScore: The 0–100% Confidence Rating That Changes How Coins Are Priced on Stream

A Price Without Confidence Is Just a Number

Imagine a coin dealer gives you a price — say, $2,850 for an 1893-CC Morgan dollar in VF. Now imagine they refuse to tell you whether that number is based on three recent auction results, thirty, or a vague memory from a show two years ago. You would not take that price seriously. And you should not have to.

That is the gap BidScore fills. Every FloorBid dealer-buy number on LastSoldCoin is accompanied by a BidScore — a 0–100% confidence rating that is always visible, never hidden, and never passed through a marketing filter. If the number is backed by deep, consistent, recent market data, the score reflects it. If the data is thin, conflicted, or stale, the score goes down. It is that simple.

What the Score Actually Means

BidScore is not a grade on the coin. It is not a judgment about whether the coin is good, bad, common, or rare. It is a measurement of data quality — and it is pulled down by only two things: a lack of available market data, or a conflict between the data sources that feed the estimate.

• 80–100: The FloorBid number is backed by strong, consistent data across multiple sources. High confidence — you can price against this with conviction.
• 50–79: Data is present but limited — maybe fewer recent sales, or a wider spread between sources. The number is still useful, and you should factor the confidence level into how aggressively you bid or price.
• Below 50: The data is genuinely thin. This happens with rare dates in unusual grades, coins that rarely appear at auction, or series where comps are sparse. The FloorBid number still represents the best available estimate — but the score is telling you, honestly, that you are in thin-data territory.

This is the fundamental difference between BidScore and everything else in coin pricing: it does not pretend to know what it does not know. When the data is strong, the score is high. When the data is not, the score is honest about it.

Why Transparency in Pricing Matters

Live coin selling is built on trust. A viewer who has never bought from you before is watching you hold up a coin and name a price. They have seconds to decide whether to bid. In that moment, your credibility is everything.

When you can say "FloorBid on this 1916-D Mercury dime in G4 is $980, and the BidScore is 87 — that means strong data behind the number," you are not just giving a price. You are giving the buyer a reason to trust it. You are showing your work. That closes sales.

Transparency is a core brand characteristic of LastSoldCoin. The FloorBid number and the BidScore are always shown together. We do not hide the score behind a paywall. We do not suppress low scores to make the product look better. A low BidScore on a thinly traded coin is useful information — it tells you to proceed with caution, widen your spread, or dig deeper before committing. Honest pricing tools make better dealers.

Available to Everyone — Data Depth by Tier

The BidScore number itself is visible on every search, for every user, on every tier — free, Pro, and Premier. What changes by tier is the depth of the underlying data you can see: free users see the score and the number; Pro users see Pro-level source data backing it; Premier users see the full picture. The differentiator — the score — is never gated. That is how you drive honest adoption.