Here is the second version of the FL5 i put 1936 but not too sure as the FL6 in the catalogue in 1937. Much the same as the previous version but now it has the two tube air inlet in the burner this continued from this lamp and into all versions of the FL6 series Notice the much shorter stem on the control cock the change in the one way valve in the pump and the fixing for the front door. cheers pete
