This is an early Helios 44, produced 55 years ago. Being an early model, it has an M39 ZENIT mount, but I will send an M39 to M42 conversion ring along with it. You can simply attach it and use it without any problems as an M42 mount lens. The lens surface has some light scratches that are visible when held up to the light, but there is no mold, clouding, or balsam separation. I think the condition is good for a lens of this age. It works without any problems. I was able to take clear photos without any issues during test shooting. Helios 44 Zebra 58mm F2.0 Metal hood M39 to M42 conversion ring mount adapter Front and rear caps Can be used without any problems as an M42 lens. I purchased it from Ukraine, described as a beautiful item. Among the Helios lenses, this is a rare "Zebra" model, with a silver and black pattern. Unlike later models, the black paint has a smooth, luxurious feel. I was able to obtain one after a long time. Works without any problems. It's hard to find good early Helios lenses, but I recommend this one. It's a popular and rare lens that allows for atmospheric photography due to its early coating. It's a great value set, including the hood, conversion ring adapter, and more. The Helios 44-2 has oil stains on the aperture blades in almost all lenses. They do not adhere to the lens surface, so you can use it without any problems. I have included examples of photos taken with the same lens on the photo-sharing site Flickr. Please refer to them. I will ship it free of charge nationwide via Sagawa Express.