This is the normal silver to doller exchange rate: https://www.xe.com/currencyconverter/convert/?Amount=1&From=XAG&To=USD
Look at silver on the right hand side of the debt clock: https://www.usdebtclock.org/
Edit: us debt clock showing silver at $2879
They also show gold at 28.36 in 1913, before the Fed had had a chance to start really debasing the dollar -- and $2138 -- HEY, I just watched that figure change to $2139 / oz of gold as I was looking at it.
I suspect they're pricing the metals by the amount that would be necessary to fully back the dollar with gold and silver, given their estimate (from where, I wonder?) of the number of dollars in circulation in 1913 versus, for the current assessments, today.