Vintage MELCOR 400 Calculator with Manual Case And AC Adapter | eBay
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calculators/Melcor 400 - calculator.org
calculadora de 1973 melcor 400 made in u.s.a. - - Compra venta en todocoleccion
File:Vintage Melcor Pocket Scientific Electronic Calculator, Model SC-635, Red LED Display, Sealed Battery Pack, Made In USA, Introduced In 1974, Discontinued In 1975 (16212499963).jpg - Wikimedia Commons