Vintage Sinclair Cambridge Scientific Programmable Calculator With Case, 1970s

Description

Item turns on and appears to function but cannot guarantee it to be 100% accurate. . Case is somewhat yellowed versus the back portion. Back of case also has purple ink stain on one corner.
The tab on back cover is also brittle and has some damage, although still attached.
Please view all photos for details.
Buying as is and thus selling at a reduced cost.