(Postage Due) 1932 (3 OC) incoming printd commercial cover from India, underfranked on reverse by two 1a. tied Kalavad cds of 17 Sep, Kalavad/Due horseshoe taxmark (partly obscured) and bold ‘T 10 Cents’to indicate double deficiency in gold centimes, part arrival backstamp of 2 OC, with 1930-33 6c. black/yellow (6th setting, 1st printing, R2/2) applied on face and tied by Reg Zanzibar cds of following day. Small envelope faults but a fine and striking commercial usage. Ex Griffith-Jones (illustrated as fig 11.25 on p.306 of his book).