In the past, we did not document the year of issue. But this date is quite important to see how the labels are changing. How can we correct the date? Is it enough to have the fields
- Year of Issue
- Flag: Checked
Or do we need more fields, for example of a good guess of all collectors and calculate the average. Do we define relations, like: I guess this label is older then the other. How do we sove this problem?