German Delaware Crossing Medal

There isn't a big collector base for medals created for the 1932 bicentennial of Washington's birth. The 1999 catalog suggests a value of $125 in Unc. That sounds reasonable to me. More broadly, I'd guess $50-250 depending on the phase of the moon.

PCGS says the slab Baker-listed pieces (https://www.pcgs.com/tokensandmedals). If you need something more definitive than that, I think you'll need to contact customer service directly.

This is a large medal (plaque). You're going to have to pay the $20 surcharge for an oversized holder. This is a case where the cost of slabbing might outweigh the benefits.