![File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Vintage_Unisonic_Electronic_Pocket_Calculator%2C_Model_890C%2C_VFD_%28Vacuum_Fluorescent%29_Display%2C_Sealed_Battery_Pack%2C_Made_In_Japan%2C_Circa_1975_%2816390017822%29.jpg/1923px-Vintage_Unisonic_Electronic_Pocket_Calculator%2C_Model_890C%2C_VFD_%28Vacuum_Fluorescent%29_Display%2C_Sealed_Battery_Pack%2C_Made_In_Japan%2C_Circa_1975_%2816390017822%29.jpg)
File:Vintage Unisonic Electronic Pocket Calculator, Model 890C, VFD (Vacuum Fluorescent) Display, Sealed Battery Pack, Made In Japan, Circa 1975 (16390017822).jpg - Wikimedia Commons
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Vintage green VFD calculator fonts: Sharp QT-8D (1969), PC-1001 (1973), EL-811 (1972), PC-1200 (1977) : r/calculators
![Found & fixed up a rare working Sharp's first pocket scientific calculator PC-1801 (1973) with red LED pictured next to a PC-1802 with VFD (1975) and financial EL-8200 with VFD (1975) : r/calculators Found & fixed up a rare working Sharp's first pocket scientific calculator PC-1801 (1973) with red LED pictured next to a PC-1802 with VFD (1975) and financial EL-8200 with VFD (1975) : r/calculators](https://preview.redd.it/found-fixed-up-a-rare-working-sharps-first-pocket-v0-cv4zt37tz8bb1.jpg?width=640&crop=smart&auto=webp&s=a683a4c1f17ffd082d3a5f2bf0da060e37646740)
Found & fixed up a rare working Sharp's first pocket scientific calculator PC-1801 (1973) with red LED pictured next to a PC-1802 with VFD (1975) and financial EL-8200 with VFD (1975) : r/calculators
![scientific calculator * SHARP [EL-5000] sharp Showa Retro count machine VFD display fluorescence tube display : Real Yahoo auction salling scientific calculator * SHARP [EL-5000] sharp Showa Retro count machine VFD display fluorescence tube display : Real Yahoo auction salling](https://auctions.c.yimg.jp/images.auctions.yahoo.co.jp/image/dr000/auc0410/users/03adba364469d6b7503b902aa4ac948d6f20ba14/i-img1200x900-15404826856mesao1533331.jpg)
scientific calculator * SHARP [EL-5000] sharp Showa Retro count machine VFD display fluorescence tube display : Real Yahoo auction salling
![File:Vintage Omron 86R Electronic Pocket Calculator, VFD, Made In Singapore, Introduction Date - 1975 (16218662760).jpg - Wikimedia Commons File:Vintage Omron 86R Electronic Pocket Calculator, VFD, Made In Singapore, Introduction Date - 1975 (16218662760).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/0/08/Vintage_Omron_86R_Electronic_Pocket_Calculator%2C_VFD%2C_Made_In_Singapore%2C_Introduction_Date_-_1975_%2816218662760%29.jpg)