yes, 1962 equals 45 years old. I was born in 1960, and hit my 47th birthday last month.
Datig is wrong, and his information is far out of date. It is worthwhile to own, but don't use it for hard facts. That said, there were years where 180 thousand lugers were made by one company (Erfurt 1917). Many years more than 85-100 thousand were made, so lots of suffixes, and lots of same serial numbers.
His point is completely correct; if some tells you that 6441 was once stolen, they should be able to tell you that it was an "Erfurt, 1914, sn 6441 (no suffix)". Because sn 6441 was made by DWM, by Erfurt, by Simson, by Krieghoff and by Mauser, and with suffixes, 6441 was made many, many times.
Ed