As you may have guessed today's rant is brought to you by the recent late 5th century finds from Tsaritsyno and the fact that the Gultlingen helmet was in use from 460 to 480. But we'll get there in a bit.
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The line between Weisenau and Niederbieber/Heddernheim is blurry enough for mid-2nd century helmets that Florence Museum could be either.