I have this Westclox Bullseye here. The model is 90001 and there is a small 12 in there (which could be a serial number) I bought this off of Ebay for 25$.
ساعة جيب أمريكية قديمة. 1964 ميلادي - موقع حراج
Vintage Westclox Pocket Watch Model Bulls Eye Size 16 Measuring 2 Inches in Diameter the Most Popular of Sizes circa 1950s - The Pocket Watch Guy
Westclox Bull's Eye Watch Style 3 Pocket Watch
Westclox Vintage Bull's Eye Wind up Pocket Watch | Life's Celebration Center