plaque

I possess the actual builder's plaque off of a WW1-era (launched before WW1, but participated during WW1) battleship/dreadnought and would love to find a way to place a value upon it. It was scrapped as part of the Washington Naval Treaty. Obviously this is rare- from what I understand only the...

Once again, I turned a quarter into $$$ by finding a coin plaque. I found this California redwood plaque at recycling place. It's cracked down the middle but all the cash is there. The cashier charged me a quarter which made sense to me. Not sure, but it looks like approx $6 to me.

Hope you can help finding out exactly what this is, ive been through hundreds of google pages trying. I found it a few days ago near a new tree so they probably lifted it up some when they dug the hole for the tree. Thanks for looking and hope you can help