A correction for the reverse side: HEILEGE VNS IN DEINER WARHEIT and in the exergue: AVG.CONF.MEMORIA-SECVNDVM REPITITA-A.MDCCXXX. On the line below the figures is: DOCKLER, J.
This medal commemorates the bicentennial of the Augsburg Confession in 1730. The obverse has the busts of Martin Luther and Philipp Melanchthon (last H omitted on the medal). The reverse has 'seven female figures of royalty, kneeling and praying before a burning sacrifice upon an altar, the smoke frames rays emanating from the triune God in clouds, by each figure - a crown on the floor, near each figure - the shield of their city or state'.
Daniel? Siegmund Dockler, Junior, was a goldsmith, die engraver and medallist in Nuremberg who died in 1753.
In silver, the medal sells for around $160 to 400 in average condition:
https://www.ma-shops.com/emporium/item.php?id=24732&lang=en
In brass, the metal is listed for around $50:
https://www.ma-shops.com/knopek/item.php?id=9262&lang=en
I could not find a sale for your coin in tin.
