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 Fliegeruhr 6248-1 Corrugated Sheet JU52

details:
series Corrugated Sheet JU52
movement Ronda 6203.B, Swiss technology
big date, dual time - freely adjustable second time, quartz-controlled
white dial with black digits / markers and silver colored Junkers apply
engraved dial in "Corrugated Sheet" style
stainless steel case, satined
diameter: 40 mm, Height: 12 mm, weight: 100 g
water-resistant up to 5 atm