Is it just me, or does it seem that the classic Belgian Congo stamps are more likely to have socked-on-the-nose cancels than your average postal authority? It's not just Stanley Falls, or Matadi. This seems to be the case with several postmarks, which rules out just one or two careful postmasters.
Am I imagining this? Here is just one example to illustrate my point:

I'd be interested in your thoughts. (And scans.)
Collin