I'm in Paris and will try my damnedest to pick up some handsignals from MATIF whilst here. Above is a video which explains the hand signals and for the first time in my life, I'm regretting skipping so much school because dropping out of French in my sophomore year of high school is hurting now although I understand most of it. I hope to get the video translated to share some insights but the hand signals look very similar to those used on other trading floors, specifically the CBOT. The reason why the CBOT was the basis was hand signals is because MATIF got started with the guidance of the CBOT and I've corresponded w/the gentleman who helped develop signals for MATIF. As for brokerage houses he could only remember a couple, Societe General was a salute ("salute the general") and Credit Lyonnais was a lion claw as (Lyon sounds similar to lion). Not suprisingly the video doesn't list brokerage signals.