Help identify history.
Custodians often possess objects with missing provenance or unknown utility. Review the evidence and submit identification proposals.
Unknown
Unknown aerospace component
Era: Possibly 1960sFound: California, United States
Found in the estate of a former North American Aviation engineer, in a crate marked only with a partial part number.
Top Proposals
87
Apollo Lunar Module environmental control valve
Proposed by Sarah Lin — Verified Expert, Cold War & Apollo hardware
41
Saturn S-II pneumatic regulator component
Proposed by M. Okafor — Contributor
Unknown
Unidentified glass vacuum device
Era: Possibly 1920sFound: Heidelberg, Germany
Recovered from a university physics laboratory during renovation; no markings beyond a hand-etched serial.
Top Proposals
72
Early X-ray tube (Coolidge-type)
Proposed by Prof. H. Brandt — Verified Expert, early instrumentation
Unknown
Hand-wired logic board, no markings
Era: Possibly early 1970sFound: California, United States
Purchased at a Silicon Valley estate sale with a box of TTL data books. Wire-wrap construction, no silkscreen.
Top Proposals
64
Prototype arcade game logic (pre-microprocessor)
Proposed by J. Ferreira — Contributor
38
Industrial controller prototype
Proposed by Community discussion
Unknown
Brass instrument dial with twin scales
Era: Possibly 1890sFound: Northern Europe
Inherited with a surveyor's chest; the scale units do not match any known transit or theodolite in the family collection.
Top Proposals
55
Mining compass dial (verner-type)
Proposed by Lindqvist Workshop Archive