All Junkers watches are handmade [made in germany] and provided with an unequivocal serial number which is engraved together with the model number and the Junkers applique at the case back.

Junkers Automatic Chronometer Certificate Sternwarte Glashütte 6662-1

Details:
series Iron Annie JU52
movement ETA Valgranges A07.161, 24 jewels, Swiss made
big date, power reserve indicator, mechanic, self-winding
sapphire glass, glass exhibition back
white dial with black digits / markers and silver colored Junkers apply
Chronometer Certificate Sternwarte Glashütte - guarantees highest precision and accuracy of measurement even through extreme temperature variations
engraved dial in "Corrugated Sheet" style
stainless steel case
diameter: 40 mm, Height: 12 mm, weight: 120 g
water-resistant up to 5 atm