01
Observe the market
We track verified auction results, dealer transactions, and IGA-certified sales across the region and abroad. Estimates start from real transactions, not formulas.
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Our methodology
How we arrive at every price estimate
IGA pricing is editorial, not automated. Every estimate is reviewed by our team and grounded in three inputs: market observation, rarity calibration, and regular updates.
02
Calibrate to rarity
Population data is built into every estimate. A grade with three certified examples is priced differently from a grade with three hundred. Rarity context is part of the value, not an afterthought.
03
Update regularly
Every estimate carries a last-updated timestamp. When the market moves significantly, we revise the figures — and the change shows on the page.
Estimates are reference values, not appraisals or guaranteed sale prices. Actual transaction values vary by piece, eye appeal, venue, and timing. For a formal valuation, contact our team.
Put this into practice
Browse current per-grade estimates, or submit your coins for a documented IGA grade and a certified slab.