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In the pic below, the watch on top is the Alpinist and below it is the SCVS001. Both belong to the Spirit line.
Base on their measurements, I find that the Alpinist is slightly thicker. The difference is less probably than 0.5mm and hence negligible.
However, the shape of the Alpinist’s bezel actually makes it look taller. As you can see in the picture, the SCVS001 has a ‘thinner’ bezel while the Alpinist has a thicker one. You will also notice that the crystal sits higher on the Alpinist than on the SCVS001.
Although both are 38mm, the Alpinist is actually bigger than the SCVS001 due to its crown guard. The picture also shows that the Alpinist has a longer lug to lug distance than the SCVS001.