AP question about production?

[SubKing]

does anyone know just how many of each model is produced each year by AP since the watches are made completely by hand with extreme detail?

There is a No xxxx engraved on the back but i'm not sure if thats the total number of that model produced to date or if thats the number produced for that series..

im also confused as AP doesn't change their series letter every year like rolex does.. I know they were making G series for a couple years and now they have released H series.

any info would be great.
i think now that the ROO's are being shipped with AP's in house movement, their production numbers may be a little lower than before at least for a little while.