Sometimes, like this one, pianos of this era had tuning pins with oblong heads. Tuning pins now always have square profile ends, so that a star-shaped tuning lever tip can fit on in a variety of positions. The tuning lever tip for oblong pins can only fit on in two positions, and this makes it MUCH harder to tune the piano. Why did anyone ever think oblong pins were a good idea? They couldn’t have been any cheaper to manufacture. The use of a T-type tuning lever would probably make things a bit easier.