Any clues?

The high-waisted R and low-waister A remind me of Venus, but the showing of the extra bold extended weight in one of my older type sample books omits the R and S, so I can't compare them to this sample.
Akzidenz Grotesk Bold Extended will get you close, although it's not as heavy as your sample.
http://www.philsfonts.com/zzz_detail.html?sku=BQ90038007P1
I was able to get the Ludlow's Annonce Grotesque around march of the last year, and no longer available Yves
Franz, maybe you used Reservoir, a very "rough" version of Annonce.
Captured from web.archive.org on 25 Aug 2005. view this capture