Up for sale is a highly collectible and historically significant vintage R. & J. Beck Ltd. x74 / 0.65 Reflecting Microscope Objective Lens.

This rare scientific instrument component is proudly stamped "Made in England" and bears Patent Number 695352, highlighting its classic mid-century aspheric optical engineering. Designed around C.R. Burch’s groundbreaking optical principles, this two-mirror reflecting lens completely eliminates chromatic aberration across the UV, visible, and IR spectrums.

It comes complete with its original fitted vintage hardwood storage box, making it an exceptional find for serious collectors of antique scientific instruments or specialist optical users.

Specifications & Optics:

• Magnification: x74

• Numerical Aperture: 0.65

• Focal Length: 2.6 mm

• Optical Design: Completely achromatic, utilizing precision internal mirrors rather than refractive glass. Corrected for spherical aberration, coma, and astigmatism.

• Mechanical Adjustability: Includes the built-in mechanical adjustment ring for calibrating the separation distance between internal mirrors to accommodate different tube lengths and cover-glass thicknesses.

Condition Notes:

• Cosmetics & Markings: The body is in excellent vintage condition with clear, readable engravings for the patent number and magnification specs.

• Optics & Mechanics: The external adjustment ring turns smoothly.

• Original Box: The hardwood case shows minor vintage wear consistent with age but remains structurally sound and fits the objective securely.

Shipping & Handling:

This item will be meticulously packed in bubble wrap and shipped securely to ensure the precision optics are completely protected during transit. Tracking and insurance will be included.