27 C.F.R. § 41.170
(b) Large cigars. Refund or credit of tax on large cigars withdrawn from the market is limited to the lowest tax applicable to that brand and size of cigar during the required record retention period (see § 41.22) except where the importer establishes that a greater amount was actually paid. For each claim involving large cigars withdrawn from the market, the importer must include a certification on either TTB Form 5200.7 or TTB Form 2635 (5620.8) to read as follows:
The amounts claimed relating to large cigars are based on the lowest sale price applicable to the cigars during the required record retention period, except where specific documentation is submitted with the claim to establish that any greater amount of tax claimed was actually paid.
(See 26 U.S.C. 5705)
[T.D. ATF-80, 46 FR 18311, Mar. 24, 1981, as amended by T.D. ATF-232, 51 FR 28086, Aug. 5, 1986; T.D. ATF-243, 51 FR 43194, Dec. 1, 1986; T.D. ATF-251, 52 FR 19341, May 22, 1987; T.D. ATF-307, 55 FR 52745, Dec. 21, 1990; T.D. ATF-424, 64 FR 71933, Dec. 22, 1999; T.D. ATF-420, 64 FR 71944, Dec. 22, 1999. Redesignated and amended by T.D. TTB-16, 69 FR 52424, 52425, Aug. 26, 2004]