Hoplite Shield Designs

[hoplite14gr]

A quick note on Ancient Greek uniformity.
Ancients had like us the IFFF problem. (Identification Friend From Foe)
Some common dress or device of totemic style existed in the Neolithic clans.
In the bronze age the "boar tusk" helmet and the horns on helmet and lated the 8-shaped shield that seem not to be used bu other cultures were the mark of the Aegean Warrior.
From the Geometric era to Early Archaic era it was hard to distinguish between the who was who.
As a way to counter that the shield device was developed.
Example
There was no way to distinguish between the Spartans and the Argives who fought in Hysiae in 669 B.C. who was who based on their armor.
Contemporary warrior depictions from both places show mixture corinthian and "illyric" helmets and fragments from chalcidic have been excavated.
Only the white color of the Argive shield would distinguished an Argive from a Spartan of the Aegidae clan (snake on shield too!)

There is no armor that can be identified as charcteristically Spartan or non Spartan.
Considering the Spartan help in overthrowing the Peseistratides and the gifts given to them why the "attic" helmet would be unthikable in Sparta?

Kind regards