Hello Richard;
The Durst 601 is a fine enlarger for 35mm and 6 x 6 cm. I would take apart the head and clean it up. A trash bag is placed over the head to keep it dust free between uses. Yes it uses the standard 75 watt enlarger bulb. A recessed lensboard for the 50mm, flat board for the 75mm. I really liked the negative carrier with the ability to maskout stray light. I went to a Beseler 23c so I could enlarge 6 x 9 cm negatives. You will need to pickup some filters for the tray for B & W. Have fun, Steven.