Most fields on Colnect are single value fields where only one value can be entered, often from a list.
Multi-value fields, the most common being themes, allow adding a few values to a field.
The following fields have now changed from single-value to multi-value due to coordinator requests:
Coins:Mints
Postcards:Authors/Issuers
This means that editors can now easily add more values.
To know which items have 0 values assigned, use a /0 for the filter such as in:
