Thanks for the reply...however, I know that the 1st 1948 series was issued some years before 2010 because I purchased the #2120 new right after it was issued...sometime between 2002 and '07. There was a 2nd 1948 series issued years later, changing the 'winged' logo on the top of the watch to a 'V'...most likely the 2010 date you mention. What I know for sure (and can be gleaned from the front and back of the watches) is that it is a Swiss chronograph movement, genuine leather strap, and 23k gold plated. Invicta hasn't answered my email questions, but another collector informed me that he believes Invicta only made approximately 600 watches in three different colors in this 1st series...although, he didn't know the exact date of manufacture, exact number of watches made, or the movement number. Those are still my questions.
BTW: The movement is extremely accurate, with both watches within seconds of each other and losing less than several minutes between regular two year battery changes by a jeweler.