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Groschen Markirch Hufeisen Mi. en Cover folded letter with stamps of Germany Groschen issue large shield horseshoe Hufeisen cancelled at MARKIRCH Alsace on sent to Paris via AVRICOURTPARIS line Michel scan own Jacquesverlaeken Scan of cover years old Marque d'entre en France PDGermanyKUG PD self cczero stamps of the German