Searching for combined abacus calculator

From: M Steinbock
Email: msteinbock@sbcglobal.net


Help! I'm looking for a combined abacus/calculator. First saw one in Japan, was told no longer made. Have learned that Sharp made 4 models (EL8148, EL-8048, EL 428, EL 429) and Suntory at least one, in the 70's. Grateful for any leads. Please email me at msteinbock@sbcglobal.net.