This item is from about 38 years ago. I bought it new and used it, but I've had it on display in the living room for the last 25 years. I am an amateur, so I will describe it to the best of my knowledge. Thank you. I can't tell if there's any mold inside the lens, I'm sorry. CANON ZOOM LENS EF 28-105mm 1:3.5-4.5 MACRO 0.5m/1.6ft AF MF ULTRASONIC 1302915G Model Number? With characters