https://en.numista.com/forum/topic49781.html#p419267
these first four are what I currently cannot identify. The fifth I got
a few weeks ago, and maybe will ask on the French forum, but will try here first.
1. [Square with rounded edges 23mm] Rusty, and maybe shield on obverse
2. [Very corroded 25mm] Maybe an orb and cross on reverse. Possible lettering in red
That reverse looks like the reverse on here ...
https://en.numista.com/catalogue/pieces49886.html
3. [Very thin with gold colour patch 25mm] Maybe a ship on obverse and a square on reverse
SOLVED: https://en.numista.com/catalogue/pieces34228.html
4. [Very thin 23mm] Shield with cross and circles on obverse. Eagle wings and tail on reverse

5. Described by seller as
'French Jeton Obverse: King standing in Gothic archway Reverse: Fleur-de-Lisse A V E M'
Additionally 'Researched French bronze Jeton. An early Jeton produced for use with a counting board. This jeton is a copy of the Gold Coins of Charles IV, or Philippe VI (1322-1350). ca 1330 King standing type. Obverse: King standing in a Gothic archway. Legend around edge: AVEM/ARIA Reverse: Quatralobed with Fleur-de-Lisse type pattern,
around edge: A V E M (Diameter 23mm, and Weight 2.1grams)'.
Would not like to say what lettering is visible. Maybe one or two letters here and there.
Thanks in advance for any help!