Must have been a very deep jar! I'm not sure either based on the method I chose.
Method context: I counted 75 on the picture given and thought it was around double that (w/ deviation) based on the width of the jar in the picture.
I did the same. Counted around 75 and roughly doubled that. At first, I thought the jar is a lot deeper, but the weird bottom threw me off, otherwise I would have guessed more.