No dealer shall use any invoice or retail installment contract unless a sample form of that invoice or contract has first been approved by the Director as being in accordance with this chapter.
Reproductions of the invoice and the retail installment contract in the form approved by the Director shall be assembled in sets in such manner as to provide an original and not less than one (1) copy of the invoice and two (2) copies of the retail installment contract.
The original and all copies of the original shall bear the same number.
D.C. Mun. Regs. tit. 16, r. 16-350