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Discussions about covers, postmarks, postal rates etc.
6 discussions 7 comments Most recent: Can you help identify this cover and tell me who Muller is? by fernandobaez on September 2020
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Discussions about stamps issued or overprinted for revenue purposes.
1 discussion 3 comments Most recent: The 'Timbre Mobile' Series of 1923 by jguyolivier on December 2018