27 C.F.R. § 19.499 — Authorized abbreviations to identify marks.
§ 19.499 Authorized abbreviations to identify marks. In addition to the other abbreviations and symbols authorized under this part for use in marking containers, a proprietor may use the following abbreviations to identify the following marks: Mark Abbre- viation Completely Denatured Alcohol CDA Gallon or Wine Gallon WG Gross Weight G Proof P Specially Denatured Alcohol SDA Specially Denatured Rum SDR Tare T Tax Determined TD Wine Spirits Addition WSA (26 U.S.C. 5206)