216 Jamaica Avenue, LLC v. S&R Playhouse Realty Co., 540 F.3d 433 (6th Cir. 2008)

("gold clause" in 99-year lease entered into in 1912 upheld requiring rent to be paid in gold coins rather than cash; gold clauses banned in 1933, but became enforceable again via federal legislation in 1977; 1982 assignment of lease obligated defendant to terms of 1912 lease; "meeting of the minds" present where assignment quoted extensively from 1912 agreement).