Eritrea samples. ER-G00017 is a German test plate and the design was never adopted. The others are just some of the ones that, I believe, all came from Eritrea in the early 1990s and most are just unused plates but there are a couple of test designs also. Eritrea must have sent plates to collectors who asked in the early 1990s but they certainly don’t now.
If you have one and you know when and where it came from, let me know please.