The same reference we grade by. No hype, no invented provenance — just what is observable in the glass, and how to check a price before you buy or sell.
Grading a marble is really two questions: what did the factory or maker leave behind, and what did the playground leave behind. Only the second one moves the grade.
Before you guess a maker, settle how the marble was built. Construction is observable. Maker is usually an educated guess.
Asking prices tell you what people hope for. Sold prices tell you what the market did. Only one of those is data.
Glass marbles survive decades of play then get ruined in a week of bad storage or one bad envelope. Here is the low-risk approach.
Just Marbles
Operated by Hardy Apex, Quebec, Canada. Prices in Canadian dollars (CAD). We ship worldwide with tracking.
Customer service: info@hardyapex.com — replies within one business day.
Checkout is processed securely by Shopify over an SSL-encrypted connection. Card details are never handled or stored by Just Marbles. Every marble is a single, individually graded item — photographed as it is, with manufacturing marks and any damage described honestly, and attribution always labelled as attributed, undocumented.