Hi,
As you can see below on an extract from a table I made, I deduced your bike has very likely been built in june of 1969 :
06/69 1003114 E1003239
06/69 1003256 E1003201
07/69 1003412 E1003838
06/69 1003520 E1003810
06/69 1003541 E1017144
06/69 1003575 E1003834
The building date #3412 seems strange but not impossible, knowing that Honda didn't manage engine an frame numbers.