Commodore SR-6140R/6120R

Serial number	10529, made in England
Accessories	Pouch
	Power supply
	Original cardboard box wth price tag "199.00", model number SR-6120
	Manual: Models SR6140R, SR6120R, SR9140D, SR9120D, SR990D Scientific Electronic Calculators Owner's Manual (English)
	Quelle Versand Garantie-Karte (German), undated
Condition	Absolutely excellent! Even the built-in accu pack still works. Only the "x<->y" key below the power switch shows a bit of wear.
Repairs, Comments	On the front the model number says SR-6140R whereas on the back it is SR-6120R. 30.1.2003 Removed the rechargeable battery pack because it had already started to leak.
Acquired	7.1.2003

Type, Precision, Input mode	Scientific, 10 BCD digits, exponent ±99, Algebraic
Programmable	No
Memory	2 storage registers, not permanent
Display	10 digit 7 segment red LED mantissa plus sign, 2 digit 7 segment red LED exponent plus sign
Special features
Original Pricing, Production	Unknown
Batteries	Built-in accu pack or DC power supply, 6V, plus on center. Note: Even though the note on the back of the unit requires 6V power it won't work with 6V. Using 7.5V is fine. The more digits are entered (ie. try multiple "8") the dimmer the display becomes.
Dimensions	Length 15cm, Width 7.8cm, Height 3.3cm
Links	See PR-100. Vintage Electronic Calculator Manuals. Manual (PDF, English)
Comment	Commodore calculators with disposable batteries are labelled with a "D" model number (ie. SR-9120D). Apparently, this unit has also been sold by Privileg as the SR-30.