Is this a known variety? 1940-S Mercury Dime obverse die crack

I'm not too familiar with Mercury varieties, and seem to have misplaced my copy of the cherrypicker's guide. But this die crack through Liberty's hairline really stood out to me - is the position of the crack a known variety for the 1940-S?

Taking a closer look at the pic now, I actually see up to three smaller cracks on the obverse as well.

 

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Have you seen a lot of die cracks that are considered varieties?

 

The only place I have seen die cracks used to identify a variety is when used in conjunction with VAM.

 

If you look close you will see several cracks on that coin. I like it just for that. Rim to Rim.

 

That Merc has a very cool appearance. I don't consider die cracks to be varieties, but they do enhance the originality on blast white coins.

 

Die cracks do not make a coin a variety. But it may be a die marker for a certain variety.

 

Ah got it, thanks for the clarification all. My only other familiarity with varieties was with Morgan/Peace VAMs, so just assumed the same logic (die crack = variety) applied to all other coin series.

 

The dies in SanFrancisco seemed to break some regularity
Got this for $2.50 a years ago