Physical description

Identifying numbers 7931 a, b
a) Account Dr. to RJ Dunlea, wholesale saddlers', ironmonger, Leather Merchant, Indentor & Importer, to H.L. Vivian, Portland, in the sum of £39.14.1'
Handwritten note at bottom 'Dear H, As my solicitors will be taking over my a/c's this month, I would be glad if you will let me have the cheque oblige'
b)Envelope, white, addressed to H.L. Vivian / RJ Dunlea