16. The Collector may, at any time after making a declaration under section 9, and before delivering or dividing the treasure as hereinbefore provided, declare by writing under his hand his intention to acquire on behalf of the Government the treasure, or any specified portion thereof, by payment to the persons entitled thereto of a sum equal to the value of the materials of such treasure or portion, together with one-fifth of such value, and may place such sum in deposit in his treasury to the credit of such persons; and thereupon such treasure or portion shall be deemed to be the property of Government, and the money so deposited shall be dealt with, as far as may be, as if it were such treasure or portion.