Purchased from an old line Honda dealer who stocked lots of OEM and high quality replacement parts in the heyday of Japanese imports but is now closed. NOS Items may have shelf wear, metal items may have slight corrosion, but pictures taken from all angles and you can ask questions about condition before purchase
Outside shows shelf wear and 30 years of shop dirt. However, inside it appears to be NOS doesn't look like it has seen gasoline. Intake measures 34mm. Has a chrome slide moves easily. From a Large 4 cycle like an XL500 or 650