About the product
Date of repair
Ref. number
19
Repairer
Paul Fessi
Brand
Unknown/n.a.
Kind of product
Calculator
About the repair
(Estimated) Year of production
1930
Model, type number and/or serial number
Mechanical Calculator
Defect found
Old dirty internal parts
Has the product been repaired?
Half and/or advice given
What did you do, what advice did you give?
Partial Clean
Category