Bomber Clasp with Pennant question

[PMoz99]

Hello. Can someone please tell me if this award was given for only WW2 service, or could it also have been given for other service including any in the Spanish Civil War?

According to Wiki, it was given when one reached 300 bomber, rescue or weather recon missions. Is this correct and was it adhered to?

The reason I ask is somewhat involved, and I will try to explain it best I can -

Kurt Seyfarth (or Seyfahrt) 2/2/17-1/10/79 is recorded in different sources as having flown a total of around either 532 or 414 missions. Around 118 of these were in the Spanish Civil War.

(Note, it may just be coincidence, but if one starts with around 414, it is possible someone thought these excluded the SCW missions and added them to arrive at an overall total of 532, while someone else thought the 414 included them and subtracted them, arriving at a WW2 total of around 295).

Can we work out which is correct from the award of the pennant?

If his overall total was only 414, then excluding the SCW missions, his WW2 total would be around 296 - less than the 300 "required" for him to be awarded the pennant. So COULD the fact he has the pennant indicate he flew more than 300 missions in WW2?

Is there something else I am missing here?

Thanks
Peter