We often use the "token identification numbers" of a catalog we know
So you can use this numbers to swap with other collectors.

zz = unknown

If there is a city name, then the token is made for that city

zz is unknown or N.A.

A aluminium - B brass - Bi bi-metal - Bz bronze - K copper - P plastic - S steel - SS stainless steel - Sv silver -WM white metal / copper-nickel / nickel - Z zinc - L lead - zz unknown

(example B/S is a steel token Brass plated)

Tokens with colours:

a aquamarine - b blue - d gray - e black - g green - h beige - i brown - o orange - p pink - r red - w white - y yellow - z purple
(example Pa is aquamarina plastic)

if your token measuring significantly different then it may be a variant (please inquire me)

zz = unknown (please inquire me)

Ch = center hole; the round hole is placed in the middle of the token.

Hole = a round hole usually on top of the token and mostly done by hand drilling.

Hx = hexagon shaped hole

Sd = solid; no hole.

Sl = slot shaped hole

Sq = square shaped hole.

Tr = triangle shaped hole.

if you turn the token from left to right = the revers will points .. o'clock

example 0 = Medal Alignment 6 = Coin Alignment