1916 stampless censored envelope addressed to India. Two strikes of the two line 'I.E.F. "B" - F.P.O. No 306/POSTAGE FREE' struck in black. On the reverse 'F.P.O. 306' c.d.s. '22 MY 16' allocated to Taveta. Sent by Captain A S Stewart to the Hon A G Cardew of the Imperial Civil Service.