GSG Encyclopedia
What is the GSG encyclopedia?
The GSG encyclopedia is the reference catalogue for modern collector coins. Art coins, bullion and fandom, entry by entry, with full technical data, mintage, images, a video for every series and what the market is paying for each piece. It is free and maintained by the GSG team with the help of collectors, mints and dealers.
- One entry per coin, with issuer, mint, year, metal, weight, diameter, finish, mintage, certificate and catalogue number
- Real market data, the active listings on GSG, the price range and closed sales, with no verdict on cheap or expensive
- One video per series on the GSG channel, with the story of the issue, the artist and the details you only see in hand
How it connects to the marketplace
The seller does not write the entry
When listing, they pick their coin in the encyclopedia and confirm it. The listing title and technical data come from the entry, so all listings of the same piece group together and compare.
One page per series
Each series has a single page with the entry, the video, the pieces for sale and the ones still to come. It is the same page Google finds.
Your collection
With your account you mark the pieces you own, the ones you want and the progress of each series, and get an alert when a missing one appears.
Reviewed entries
Every entry is reviewed before publication. If a detail is missing or wrong, any user can propose a correction from the page itself.