I've read it, but he wrote that:
"The Alnico LE5-2 and LE5-3
For reasons not very well understood, there are two versions of the LE5-2, the round wire version and the ribbon wire version. Just knowing the model number doesn't help. Later versions of the LE5-2 were round wire only and the LE5-3 became the ribbon wire version. The Alnico motors had a .080 gap height and a flux density of 1.65 T.
"
What means "later" exactly?
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