Watch Circuit Movement Day Date Month German English. We got a huge supply off a watch maker that went out of business years ago. This is ESA movement and I know this is VERY RARE English and German.
Numbers go 1-31 (as seen). You get what you see.
536.121 is stamped on the back and R1407 is on the front. I do not know what that R1407 means. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Parts, Tools & Guides\Watches for Parts". The seller is "crochrc" and is located in this country: US. This item can be shipped worldwide.