The Omega Constellation Double Eagle ref. 1203.10.00 has a stainless steel & yellow gold case, which houses Omega's self-winding caliber 2500 movement. The dial is gold and the glass is domed sapphire. This model was introduced in 1999 and has a COSC certified chronometer designation. It was never polished and in very good condition. 
 
*** The pictures may show the reflection of the camera lens, black spots mostly ***

Details:
 
Make: Omega
Model: Constellation 
Reference: 1203.30.00
Year: 2007
Material: 18k Gold
Dimensions: 38mm
Crystal: Sapphire Glass
Movement: Automatic
Bracelet/Strap: Original Bracelet
Box/Papers: Yes/No