The pattern is not etched, it is 100% real mechanical damascus. Originally it had a "bas relief" effect, with deep undulating furrows. But it was very aggressively smoothed over, and some pics show islets of the original surface. I think it was intentional, to achieve a conventionally-even surface, but IMHO, the original must have been stunningly pretty.
There is no indication that the saber was maliciously assembled from spare parts, everything looks very original. You got yourself a "cut-above-the-rest" Maghrebi Saif. Congratulations!
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