N.Y. Comp. Codes R. & Regs. tit. 3, Sup. Pol. G § 8.5
Any representative office subject to registration pursuant to this Supervisory Policy shall designate itself as a representative office on any office sign at its office location, telephone listing, print advertisement and on its stationery. It shall also prominently display a notice at its office location that it is not a branch office of a bank and does not engage in general banking transactions at such office.