The Omega Cosmic Ref 2486-1 is a vintage men's wristwatch with a 35mm stainless steel case and a black fixed bezel. The cream dial features Arabic numerals, a moon phase indicator, and triple date display. The watch has a 17-jewel mechanical manual wind movement and is not water-resistant. The band is the original stainless I received when I purchased this second hand. I am including a NOS "Speiel Twist -O-FlexJr" stainless steel band with the watch. (See photo)
The watch is Swiss-made and was manufactured in the 1940s. It has a classic, luxury, dress/formal, and casual style.

 Omega signed dial.  Arabic numeral hour markers, date on the outer rim, gold minute and hour hands, sweeping central second hand, day and month below the 12, moonphase dial above the 6, hands and dial in very good, original vintage condition, natural patinas and discoloration on hands and dial.  
I have been informed that this is probably a redial and not an original..  

BRAND : Omega 

MODEL : Cosmic, Ref.2486-1

COUNTRY OF MANUFACTURE : Switzerland

YEAR OF MANUFACTURE : 1940s 

MOVEMENT : Manual Wind

CASE MATERIAL : Stainless steel 

CASE MEASUREMENT EXCLUDING CROWN : 35mm

CRYSTAL : Acrylic