[Avodah] Machatzis Hashekel in the Mishkan / Mikdash

[Micha Berger]

On Tue, Mar 06, 2018 at 12:24:08PM -0500, Zev Sero via Avodah wrote:
: Even more balebatish: Coins hadn't yet been invented. Therefore
: Moshe had never seen one.  *If* there is a requirement that the ten
: gerah of silver be minted into a coin before being given to the
: mishkan...

Doesn't this depend on whether this medrash lives in the same timeline
in which Avraham coined medalions? (Matbia shel Avrahm Avinu: "zaqein
uzqeinah mitzad echad, ubachur uvsulah, mitzad acheir." - BQ 97b)

Tir'u baTov!
-Micha