How to contribute to the catalog
The bonumic catalog is built by collectors. You can add what's missing and correct what's inaccurate. A moderator reviews every submission, checks it against other sources and brings it in line with the rest of the catalog.
What you can add
Every item and variety page has links to these forms:
- Edit — everything in one place: weight, size, metal, description, photos, interesting facts about the item, and a year, mint or variety missing from the table.
- Report an error — if you can see something is wrong but aren't sure how to fix it.
Item not in the catalog? Add it: any country and any period will do.
What makes a good photo
- At least 500 px on the shorter side, ideally 800 px or more.
- One whole coin or banknote on an even, light background, without glare.
- Both sides if you can: obverse and reverse as separate files.
- No retouching and no third-party watermarks.
Where photos can come from
- Your own photo. We credit it to your username or to the name you set in your profile.
- Sites that have allowed bonumic to publish their images. We need a link to the photo's or lot's
page, and we add the credit ourselves:
- АукционЪ.СПб — auction.spb.ru
- ANUMIS — anumis.ru
- banknote.ws (Bank Note Museum) — banknote.ws
- Аукционный дом «Александр» — adalex.ru
- Банк России — cbr.ru
- Open licenses — CC0, CC BY or CC BY-SA, for example from Wikimedia Commons. We need a link to the photo's page, and for CC BY and CC BY-SA the author's name too.
We can't accept images from other catalogs and sites without such permission, or photos licensed for non-commercial use only.
Text and data
Please use your own words rather than copying from other sites. If you can, back up your data with a link or a catalog number: it makes the review faster.
What happens next
- Your submission goes to review. You can follow its status in My contributions.
- A moderator accepts it or rejects it and explains why.
- Accepted submissions appear on the site with the next catalog update. We'll let you know with a site notification and an email; you can turn emails off in settings.
Author credit
Your photos carry your name, and a new item's page shows "Added to the catalog by" with your name. All your catalog photos are collected in My contributions. How photos may be used is set out in the Terms of Use.