Antique Brass Microscope Objective Lens Stamped '5' Unknown Maker - Zeiss?

Description

Antique microscope objective stamped '5' on brass upper section. Unsure of maker but found in a collection of Zeiss objectives. Objective appears to be in good condition with heavy wear from age and use. Comes with matching tubular case, also stamped with a '5'.
Check out our other listings for more objectives, combined shipping available. Please see photos, sold as found.