A certificate of the sending of notice under rule 34.8 dated and endorsed on the lease or an extract of it, or on the letter of removal, signed by the sheriff officer or the person sending the notice, his solicitor or factor, or an acknowledgement of the notice endorsed on the lease or an extract of it, or on the letter of removal, by the party in possession or his agent, shall be sufficient evidence that notice has been given.

Where there is no lease, a certificate of the sending of such notice shall be endorsed on a copy of the notice or letter of removal.