Such local law shall provide that if prior to the date upon which the taxes go into effect, a contract of sale of any beer or other alcoholic beverages described above was made, and delivery thereof pursuant to such contract is made within the city imposing such taxes on or after the effective date thereof, the vendor shall be deemed a distributor, and such beer and other alcoholic beverages shall be deemed to be sold, and shall be subject to the tax at the time of such delivery.
N.Y. Tax Law § 445