@NSK I don't know German and English and often google translation makes me incomprehensible. My stamp Mi 941 I thought was type I and E (line perf L13 1/4:13) whose value is 1400 Euro. In fact, it is type II and B (comb perforation K13 1/4:13) whose value is 1.5 Euro. That's how I found out about comb perforation, which can be mistakenly interpreted as line perforation. I hope you understand me this time.
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