This vintage mid-20th-century mechanical adding machine offers a captivating glimpse into the era of early mid-century office technology. Made in the USA, this hand-cranked calculator represents the robust engineering of the period, featuring a heavy-duty cast metal body, classic mechanical key layout, and a manual paper tape carriage mechanism. Serial plate markings on the reverse record serial number 594968 and model number 10150, confirming its American manufacture. These manual adding machines were the backbone of accounting practices, banks, and commercial enterprises prior to the advent of digital electronic calculators.

Exhibiting an authentic, unrestored patina—complete with natural paint wear and vintage key aging—this piece serves as an ideal display object for industrial chic decor, mechanical antiques collections, or historical office setups. Dimensions: 39.5 cm (L) × 22.5 cm (W) × 24.5 cm (H).