Whereas screwdown lucite holders may compress cards too much and "squeeze" the corners or damage the surface and,
whereas SGC gaskets, despite being preferred by many collectors, are associated with slippage of thinner cards behind or in front of the gasket in the SGC holder and,
whereas I am not willing to risk a costlier card that I want to display using either of these techniques, I offer the following:
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Save the gaskets when you crack SGC slabs.
Place an appropriate gasket in a screw down lucite holder.
Carefully insert the card without a penny sleeve.
Replace the top of the screw down and tighten the screws as much as you like.
The gasket cannot be compressed. If the card fills the gasket as this one does, it will not slip, move or be compressed.
Hope that some of you may find this useful.