Service of bills for taxes by post

Notwithstanding anything contained in sections 629, 630 and 631 a bill for any municipal tax may be served upon the person liable therefor by sending it by ordinary post with a pre-paid letter under a certificate of posting, addressed to such person at his last known abode or place of business in the City and every bill so sent shall be deemed to have been served on the day following the day upon which letter was posted and, in proving such service, it shall be sufficient to prove that the letter was properly addressed and posted under a certificate of posting.