This is an abbreviation for Millard Brothers of Scotland, a large fishing tackle company with close affiliation with Mitchell France documented as far back as 1946/47. In those days they were wholesaler N° 1 for the whole North of the British and Scottish nations. They were also one of the very few retailers and wholesalers allowed to sell Mitchell reels due to these old friendships. They also came out with a few Mitchell reels with their Milbro Sticker attached. Needless to say they were quite disappointed when Barrie Welham opened shop in The UK with Garcia Tackle. (Updated October 5th, 2008 by JP Gumprich)