Aristo M85/M85S

Serial Number	303, 2L004 0567 molded on top edge
Accessories	Protective plasic cover
	Pouch
	Manual, (German), with two punch holes and a name stamped on the back with a date label Aug 8, 1975
	Built-in accu pack, still working (I removed it to avoid leakage)
Condition	Excellent.
Acquired	8.9.2002

Serial Number
Accessories	Protective plastic cover, broken
Condition	The calculator itself is in excellent shape. On the bottom a label of the "Stadtsparkasse Dortmund".
Acquired	25.11.2003

Type, Precision, Input Mode	Scientific, 8 BDC digits, exponent ±99, Algebraic Entry
Programmable	No
Memory	1 storage register, not permanent
Display	M85: 12 digit 7-segment red LED M85S: 12 digit 7-segment green LED
Special features	Memory arithmetic. Instruction sheet on the back of the calculator.
Original Pricing, Production	Unknown, approx. 1974, Dennert & Pape, Hamburg Germany
Links	See Aristo M64
Batteries	M85: 3x AA (accu pack or normal batteries), external AC power supply 7.5V, minus on center M85S: Built-in accu pack or external DC 4.5V off-the-shelf power supply.
Dimensions	Length 15cm, Width 7.5cm, Height 2cm
Comments	The M85 displays 1/2 as 5E-1. The M76 displays this as 0.5. Calculator forensics value 6.58003 (both M85 and M85S).