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International Grading Agency - IGA
THE IGA CHALLENGE

Where Collections Compete

Build verified sets of IGA-certified coins, track your progress against collectors across the region, and compete for the annual IGA Challenge Awards.

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Challenge Season

Season 2026 — locks 30 November

Time left to build your set before the season locks.

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ANNUAL AWARDS

2026 IGA Challenge Awards

Six categories. Egyptian pound prize pool. Submissions close June 30.

View Awards

Submissions close in

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LIVE ACTIVITY

What's Happening Now

Recent events across the IGA Challenge, updated in near real time.

    THIS MONTH

    Top Collectors

    The 10 highest-scoring collectors over the last 30 days.

    View Full Leaderboard
    BROWSE BY CATEGORY

    Find Your Specialty

    From Royal Era to Ottoman crowns and medieval Islamic gold — explore IGA Challenge sets organised by collecting discipline.

    HOW IT WORKS

    Three Steps to a Verified Collection

    01

    Submit for Grading

    Send coins to IGA for independent professional grading. Every certified coin becomes eligible for the IGA Challenge the moment your order ships.

    02

    Build Your Sets

    Add coins to standard master sets — by ruler, era, or denomination — or create custom sets around any theme you choose.

    03

    Climb the Leaderboard

    Earn points for every coin and every grade. Compete with collectors across the region and qualify for the annual IGA Challenge Awards.

    DIAMOND MEMBERSHIP

    Unlock exclusive IGA Challenge categories

    Diamond members access showcase-only sets, bonus point modifiers, and earliest eligibility for the annual awards.

    View Membership Plans