It's an M39 mount, but it comes with an M39->M-mount adapter! This lens was cleaned in June 2026. Please note that, as this is an older lens, some mold, fogging, or dirt may still be present. Please consider it to have been cleaned to a level that does not affect its functionality. [Functionality] All functions have been tested. It is ready for normal use. Helicoid: Tested Aperture: Tested [Exterior] There were no noticeable scratches or dents on the exterior. Please check the exterior by zooming in on the photo. [Optics] I cleaned the inside of the lens, but I was unable to completely remove the haze that is characteristic of this lens. I look forward to bids from those who understand that this lens has this characteristic haze. [Accessories] Front and Back of the Cap (Compatibility) M39-M Mount Conversion Adapter [Key Specifications] Legendary collapsible standard lens for the Leica Thread Mount (L39/M39), featuring a bright F2 maximum aperture, 4-element/4-group optical design, and classic Leica rendering with exceptional tonal gradation and smooth, natural bokeh. Professionally CLA'd in 2026 and supplied with an M-mount adapter, allowing direct use on Leica M cameras while retaining the classic vintage image quality. [From the Seller] Thank you for viewing our products. We plan to carry a wide range of models, from vintage cameras to digital cameras! All cameras listed here have been tested and are in working condition, so please consider them! [Store ID] July 25, 2026 10-7-4 ・[Shipping Information]・ ※※Due to the situation in the Middle East, we may be unable to ship your order. In that case, we will notify you. ・We ship via DHL ・We will ship via UPS through Yamato Transport. ・We will ship your order within 3 business days of payment. (If shipping is delayed beyond 3 days due to work commitments, we will contact you.) ・Delivery typically takes about 10 days. (Depending on customs clearance.) ・We will provide you with the EMS tracking number. **【Customs & Taxes】** ・Import duties, taxes, and other fees are not included in the item price or shipping cost. ・These charges are the buyer’s responsibility. ・Please check with your country’s customs office to determine any additional costs before bidding or buying. ・These fees are usually collected by the shipping company or when you pick up the item. Please do not confuse them with additional shipping charges. ・We do not under-declare item values or mark items as “gifts.” The declared value equals the insurance value. Such actions are prohibited by U.S. and international regulations. ・If an item is returned due to the buyer’s failure to pay import duties or taxes, any resulting costs and losses may be deducted from the refund in accordance with Catawiki’s Seller Terms. Important Notice！ Please be sure to provide your full name. The shipping company will not deliver packages addressed with initials or similar abbreviations, so please be sure to provide your full name.