What it measures
Most collectors know roughly what their cards are worth, but not how exposed they are. The Slabline Score turns that exposure — coverage gaps, single-card concentration, storage risk, liquidity, and provenance — into one standardized, credit-style number you can track and improve.
Why a single number
A score is comparable, trackable, and actionable. It surfaces the one highest-impact thing to fix next, shows progress over time, and gives a broker or insurer a consistent risk signal across any collection.
The five factors
Insurance
Is your stated coverage keeping up with current market value? The largest factor — an underinsured collection is the biggest risk.
Concentration
How much of your value sits in a single card. Heavy concentration magnifies a single loss.
Storage
Climate, fire, theft, light, and handling — the physical protections around the slabs.
Liquidity
How quickly the collection converts to cash if you needed to sell.
Provenance
How much of the value is backed by a verified grading cert and documentation.
The band ladder
See your score
Build your collection by cert number and Slabline scores it in seconds — free, no account needed.