This was a dressy model featuring screw in crown and screw in back oyster case.

Tudor Devon model 4540. Original Rose Logo dial with large applied hour markers. Very desirable original winding crown with OYSTER PATENT. Original Tudor 17 jewels movement. 3 adjustments text on winding wheel, may be a replacement or may be original, I just don’t know. Good running condition. Original gold hour and minute hands with blued steel seconds hand. This rare watch was serviced Sept. 2012. Measures 33.9mm x 42mm Priced at $1400 Make Offer  Text 702 526 8524