Well I find this a bit confusing, I have checked the BSA Owners hand book issued in 1994 and it gives your transfer as No 27 and correct for oil tank and tool box, but the later Handbook printed in 2010 gives the same number 27 but a different image for bikes 1953-63. The other transfer is listed for a 1925 bike. I have the transfer you show on both oil tank and tool box for my 1956 A7.