Und es geht munter weiter:


Hi Hannes,
...
On the Certificate is perforated number 301(country code which I
cannot find on your list) and the numbers: 5500/0/7xxxxxx (writen
by hand). There is a stamp of a watch shop in Prague (then Czechoslovakia)
with date of purchase January, 1986.



Also haben wir nun:

DDR, Bulgaria und Czechoslovakia