The pair of 1970 Austrian proofs I have are very low on the cameo/frosting compared to @Sap and have a bit more uniform appearance as in the photo. The surface color is certainly darker than a normal strike in Al-Br, which is usually closer to gold in my experience (but I guess can also depend on the specific composition of the alloy).
By the way, that 50 rupiah is an interesting coin.
Edited by tdziemia
07/17/2019 10:41 pm