Large Vintage GALENA Crystal Radio part Cat Whisker

Description

I was going through the drawers of an old radio shop, and found some old grid leak items ( which I listed) and then came across this rock in a drawer mark Galena....  use zoom, I believe it to be a Galena crystal for crystal radios.  please use zoom. nice size....
please use zoom, this is a final sale.
as found. untested , thanks
Please see all pictures and use zoom feature.  Often the pictures describe the item better than words.!
Also please see the other 2500 vintage radio related parts I listed.   I always combine shipping to my best,  just order and wait to get the invoice from me.  On Global Shipping I cannot combine as that is in Ebay's hands.
Thank you for you order and please follow my store.  New items added daily.  Also you can go into my store and pick the category for easy shopping.   Many Thanks,  Mike