Please check the area circled in red in the last photo. As it is near the edge of the front lens, it does not affect the field of view and is not problem level.
No dusts that affects viewing. Since it is a used product, there are small dusts that does not affect viewing. Inside the lens had been inspected with LED light.
If you have any question or concern, please do not hesitate to contact me. International Buyers - Please Note. I send a product by. I will always give the traking number to the buyers.Thank you for considering the product!