HP-41 Haskoning BV Module

[burkhard]

I know the HP-41CL folks are eager to "get all the ROMs", and this is one I hadn't seen before:
Haskoning BV, which apparently has something to do with the fascinating topic of traffic noise.

   

(for sale on a certain auction site)

Looks like a real oddball...
I couldn't find it on any module lists I have, and I only found a single mention of its existence here in 2009.
http://www.hpmuseum.org/cgi-sys/cgiwrap/...ead=147756