new offer on the bay 130733884755

http://www.ebay.de/itm/sehr-seltene-Heuer-Cal-15-Monaco-Ref-1133-1972-TOP-Original-/130733884755?_trksid=p4340.m1850&_trkparms=aid%3D222001%26algo%3DSIC.CURRENT%26ao%3D1%26asc%3D43%26meid%3D736018314908783306%26pid%3D100011%26prg%3D1028%26rk%3D4%26

my first impression
Dial: redialed, fat lume,
. printing differs a little
. short red minute maker at 3,
. missing " - - " at swiss
. wrong minute hand on 30min sub dial
. blue sub dial
case: heavy polished
hands: relumed

my question, in which range are the serial numbers, I thought "late" ones are stamped 1533 ? 249xxx is late? which serial numbers are "early"" which "late"
mine is 168xxx ??

thanks michael