From the "Annual Report of the Director of the Mint" for 1950 available on the Newman Numismatic Portal at:
https://nnp.wustl.edu/library/book/341Page 53, Domestic coins, including assay pieces, withdrawn from monetary use during the calendar year 1949
Below is the column for individual purchases, there is a separate column for coins received from banks.
The mints paid face value for the coins including gold coins and
Trade dollars.
I calculated and added the "number of coins".
Denomination, Purchased (face value), Number of coins
Gold $3, $15, 5
Gold $1, $30, 30
Silver
Trade dollars, $4, 4
Silver 20-cent pieces, (zero)
Silver
Half Dimes, $0.10, 2
Silver 3-cent pieces, $0.03, 1
Nickel 3-cent pieces, (zero)
Copper 1/2-cent pieces, $81.03, 16206 (Somebody had a lot of 1/2 cent pieces)

Only worth a dollar? In 1949 yes.
