Power supply assembly with metallic chassis and printed circuit board, labeled Baker Instruments

This object appears to be an industrial or electronic power supply component attached to an L-shaped metal mounting chassis. The assembly features an exposed printed circuit board (PCB) populated with multiple electronic components including large black cylindrical capacitors, copper-wound inductors/chokes, voltage regulators attached to aluminum heatsinks, and a black multi-terminal screw barrier strip along the front edge. Printed clearly on the metallic face of the chassis are several technical specifications and markings: 'BAKER INSTRUMENTS', part number '15100431-000', 'OPT INDUSTRIES, INC.', FSCM code '53342', model or reference 'PX 3686 S/N', along with DC output ratings indicated as '12V 8.3 A' and '5V 12 A', and dual AC input ratings of '115 VAC / 230 VAC' at '3 A / 1.5 A'. The unit shows signs of age, use, and exposure, including surface discoloration, light corrosion on metal parts, surface dust, and some fibrous debris near the base. While the labeling is printed directly onto the metal casing, full operational status and internal circuit integrity are unverified without physical testing.

Based on the provided photograph, I am examining an industrial or laboratory power supply assembly featuring an L-shaped metallic chassis and an exposed printed circuit board (PCB). The chassis bears printed markings attributing the unit to Baker Instruments and OPT Industries, Inc., with part number 15100431-000, FSCM 53342, and specifications for 12V and 5V DC outputs. From what I can see in the photo, the assembly includes standard components such as large electrolytic capacitors, inductors, heatsinks, and a terminal barrier strip. The physical condition indicates age and prior use, with visible surface dust, light corrosion on the metal bracket, and minor debris. What I cannot determine from a photograph alone is the internal circuit integrity, component health (such as capacitor degradation), or operational functionality. A full hands-on diagnostic with test equipment would be required to verify if the unit produces the specified voltages under load. The market for vintage or surplus industrial electronic sub-assemblies is primarily driven by functional utility, spare-parts demand for legacy equipment, and scrap/reclamation interest. Assuming the labeling reflects the true manufacturer and the board is restorable or functional, secondary market values for surplus power supplies of this vintage typically fall in the $25 to $50 range. If physical testing reveals the board is non-functional, damaged, or a modern replacement, the value would drop primarily to scrap metal/component salvage worth, generally under $10. To establish a more precise valuation, an in-person technical inspection, continuity testing, and verification against original manufacturer schematics would be necessary.