Sure. Damascus tubes are composed of segments. Sometimes the segments in a single tube are poorly matched. In other barrel sets one tube will be significantly different than the other. The tubes are supposed to be paired so that the spirals reverse direction toward the rib. An occasional set will have both tubes with spiral windings going the same direction.
These situations are more frequently found in low grade guns like Gs. To many this is something to avoid but others find it interesting.
A few mismatched barrel sets have been found with what is believed to be original parker factory bluing. Reasons for this are only speculative.
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