I have seen these badges before, and in fact, I have a few of them in my collection, but I don't really know what it is. I don't think it is a Conductor's rank badge, and I don't even know whether it is a rank or an appointment.
The conductor and sub-conductor rank badge was first worn in the mid-1960s when the appointment was resurrected in the Cdn Army. Several Corps selected certain positions to be designated for the appointment. For instance, in the RCOC about 17 positions were designated. The RCASC also had several positions. If I can find my notes, I'll add to this.
In WW2, because there was not enough Captains in the RCOC to fill all the positions, WOs1 were appointed to some of them and many of the men were appointed Conductors. The primary positions were the Brigade Ordnance Officer (BOO), a position at each Brigade HQ. The position was designated Brigade Ordnance Warrant Office or BOWO when filled by a WO1.
Thanks Doug. Are you saying that the badge being auctioned IS for a Conductor? The other Conductor badge in my collection has a wreath of laurel beneath the Royal Coat of Arms. The seller has advertized it as a Command CWO badge, but I am inclined to believe that this is not correct. Thanks for confirming that Conductor was an appointment and not a rank.
The Cdn Army never had Command CWOs as the ebay vendor states.
The badge in the ebay lot is that of a Cdn Army Conductor appointment reinstituted in the mid -1960s.
Further to my last message, WW2 CARO 4749 "Badges, Chevrons and Armlets" at Table A lists the following appointments that wore a badge with the Royal Arms in Wreath: Conductor RCOC, Master Gunner 1st Class with a gun beneath the wreath and Staff-sergeant-major 1st class. To my knowledge, the RCASC was the only Corps that had the appointment of Staff-sergeant-major.