• Bass side: 120 buttons arranged in 6 rows of 20. That’s the standard full-size layout: bass notes, counter-bass, then major, minor, 7th, and diminished chords. Good news if you want to actually play it. • Bellows: 17 folds, grey/cream diamond pattern on the corners. The bellows tape is intact and the interior lining looks clean and golden. • Keys: Counting them, it’s 41 keys from low F to high A. Standard for a full-size. The yellowing is normal for celluloid keys from that era. In a really good condition.