When we clear out Xerxes' positions, sometimes we can find a coffer (or key).  Does anyone know at what position level you can find:

1) a class 2 coffer  (item that protects light and heavy infantry)?

2) a class 3 coffer  (item that protects light and heavy infantry, phalanx)?

3) a class 4 coffer  (item that protects light and heavy infantry, phalanx, cavalry)?

Thank you.

Long live Sparta!

**I believe I found the answer to my own question from a post under a different thread  - re-posting key info here (Thank you TLS for your research)

Class Coffer - Position Level Thresholds

Class 1 coffer:  position levels 1-20

Class 2 coffer:  position levels 21-40

Class 3 coffer:  position levels  41-60

Class 4 coffer:  position levels  61 or higher

*Statistics showed a 14% rate of drop on average  (individual player results may vary)