Question for the Photo folks.

I am interested in any tips or techniques used to reduce or hide the hairlines on the slab. 
Thanks!!

Thanks!!
Silver Baron
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Silver is the mortar that binds the bricks of loyalty.
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Silver is the mortar that binds the bricks of loyalty.
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Comments
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
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Silver is the mortar that binds the bricks of loyalty.
Discussed many times.