Add the number on the label as a secondary one?Comment by Klepsie:
It seems as if this disc exists on various different catalogue numbers. Perhaps it was distributed via different means and they used the numbers to determine how many punters signed up from which one?Comment by BandBox244:
This catalog number is different but thinking must be the correct one?
Translation of the bird names as follows:
A: Redstart, Barn Swallow, Swift, Chough, Sparrow, Hoopoe, Coal Tit, Black Redstart
B: Chaffinch, Goldfinch, Greenfinch, European Serin (another finch), Wryneck, Wren, Blackbird