I'm thinking of buying a second hand Shimano FC-TY30.
However, looking at the photo there seems to be either worn or chipped teeth on the second ring1.
Are they actually broken/chipped, or is that by design, for changing gear? Even though I'm not an expert on gear technology, they don't seem even spaced, if they are intentional.
1 At about 9 o'clock, at five teeth clockwise to around 10 o'clock, at half past two and at about 4 o'clock.