Whoever * * * steals, purloins, or knowingly converts to his use or the use of another, or without authority, sells, conveys or disposes of any record * * * or thing of value of the United States or of any department or agency thereof * * * shall be fined not more than $10,000 or imprisoned not more than 10 years or both; but if the value of such property does not exceed the sum of $100, he shall be fined not more than $1,000 or imprisoned not more than one year or both * * *.
Whoever willfully and unlawfully conceals, removes, mutilates, obliterates, or destroys, or attempts to do so, or with intent to do so takes and carries away any record, proceeding, map, book, paper, document, or other thing, filed or deposited * * * in any public office, or with any * * * public officer of the United States, shall be fined not more than $2,000 or imprisoned not more than 3 years, or both.
49 C.F.R. §10.15