Define the font, please



My first thought was Univers too, but enough details don’t match that I held off. Notice the cross-bar on the |A| is significantly thinner here and there is more variation in stroke weight on the|N| in the sample compared to Univers 86.

Totally agree with Gräfenberg. It smells "Univers" but, as perfectly spotted, some details remain off. But, they could have been the result of some manipulation: slanting, artificially emboldening, edition... As it's for a logo (Osram Sylvania), it would not be surprising it could have been the result of some customization based on Univers. BTW, Univers Next Extra Black is bit closer though not matching.