Steinway model M

Here's a model M built in the 1920's. I learned today that there's a different sound to these early 1900 pianos compared to today's sound. What I found most ointeresting though is that the black keys felt higher placed (physically, not tone) than other brands in the showroom (yamaha, kawai, bechstein). The other steinways were the same. When I get to play some more, I'll report back about if this is an oddity or normality.