the lower cased font in the background. I knew it, but i lost it. thanks

Helvetica  Suggested by SashiX 
Swiss 721  Suggested by SashiX 
Arial Bold  Suggested by AAAbattery 

bold with stroke or black

Maybe Swiss 721

Yes Heavy.

Mmm... still, can see some very minor differences though

PS: glad someone revise my suggestions too

Really?

Very subtle differences I must admit, but you can try it too maybe it's just me.
Anyway, it could be a "free version" of Swiss, if you know what I mean Maybe we even have it here @DF

I know better than to argue with your keen eye!

I actually used PS for that

It looks like Arial Bold to me.