APOS 90mm f 4.5 colorstigmat is engraved on the lower barrel with aperture nos. and Made in U.S.A. by Elgeet above that. I believe this lens was made in Rochester, NY, and the company also made a line of cine lenses. The aperture ring is a bit stiff around F 4.5/5.6 but is smoother above that. All apertures adjust with no problems and the aperture blades are clean. The lens is clear and shows no fungus. The proper mounting ring is included.
Free plus postage for this lens. Please plan to pay postage by paypal, USPS money order, or check. If you chose to pay via paypal, please consider including a little something to cover my paypal fee. I will ship to CONUS only.