I knew the checkered portion was an insert / separate from the actual stock but, I would have guessed it was at least glued to the rear of the stock. Thanks for the tip, Dean. That certainly puts a different perspective on removing the plate. Unfortunately, even if the wooden checkered insert is likely to separate, intact with the plate - I still 'may' have to separate the two so I can perform a repair.
*Were original Parkers with SBP's constructed that way as well? (an insert?)