Got it for a few cents and I always like contemporary counterstamps, they just fascinate me.. Almost impossible to know who did it but who knows maybe someone knows ZH - HZ ?

[URL="https://ibb.co/YZmXJfn]

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[URL="https://ibb.co/rpf7H4f]

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[URL="https://ibb.co/c8MrMqy]

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