wilhelm conrad rontgen
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wilhelm conrad rontgen |
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| navigate by keyword : correspondence mechanical collection historical philatelic physicist scientist engraving philately editorial portrait engineer designer inventor postmark envelope postcard historic wilhelm rontgen printed physics science drawing postage closeup history vintage conrad famous german postal letter stamp spain nobel prize xrays hobby retro 1955 mail post send mark old |
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| A stamp printed by SPAIN shows image portrait of famous German mechanical engineer and physicist Wilhelm Conrad Rontgen. Circa 1955 |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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