This is the right answer. Each model and colorway had their own Generations. And these are determined by revisions in the frame.Depends on the model and color way... Gets pretty complicated cause like a XX plasma had two gens... good luck finding the 2nd at all there were so few while the X metal XX had technically 5 and then you have Juliets.... Ohhhh boy... we would be here all day dividing up which ones had how many gens... if a X metal ran the full course from start to finish of production the most gens are 5
1. Serialized
2. Serialized A
3. Serialized B
4. no serial
5. Sku
As an example I would consider R1:
xmetal
Gen 1 - “Jordan” smaller orbital 4 digit serial
Gen 2 - 6 digit Serial squared stems
Gen 3 - 6 digit serial rounded stems.
I think a good way to look at gens also helps with authenticity and integrity of the pair. somone selling you. Jordan R1 with rounded stems is either clueless or devious.