It's a Koga World Tour* .. there are riv nuts on the under side of the top tube , in a water bottle cage like spacing , and the clip topeak made that mounts on center.

They also make clips to mount the pumps along side a water bottle elsewhere.

* I own a Koga WTR (R is for Rohloff) it has that pump mount, though for security, I relocated the pump to hide inside my Carradice saddle bag..