According to this vintage razor expert. You can tell he is the expert because he realizes that you have all been putting your open comb razors together wrong for years...
http://www.ebay.com/itm/Vintage-Gil...D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557
http://www.ebay.com/itm/Vintage-Gil...D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557