Circa late 1800s to early 1900s. 38.7 mm in diameter. The equivalent of a US size 12s or 12s No dial, hour wheel, cannon pinion, and center wheel post.The 4th wheel second hand post is good. GOLAY FILS & STAHL FABRIQUE GENEVE 30157. On the dial side and. + 49991 GENEVE GOLAY FILS & STAHL NO. The balance swings freely and the watch is running. Please check out my other auctions for other fine vintage pocket & wristwatches. Thanks for your interest and good luck! The item "ANTIQUE GOLAY FILS & STAHL POCKET WATCH MOVEMENT RUNS HIGH GRADE 38.7mm" is in sale since Tuesday, October 17, 2017. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique". The seller is "adtpcs" and is located in Glendora, California. This item can be shipped worldwide.