A stainless steel blue tachymeter dial chronograph 40 mm with date and calibrated rotating bezel "Long Plaing Tachimeter Dat", Ref:7104.3, 1970's17-jewel Valjoux Cal.7740 two button chronograph movement with shock resistant suspension to monometallic balance, flat spring, circular blue dial with tachymeter scale enclosing luminous baton numerals, luminous hands, red sweep hand, tonneau shaped subsidiary dials for continuous seconds, 30-minute and 12-hour registers, brushed tonneau steel snap back case with black bezel calibrated in 12-hours or 60-minutes/seconds, round chronograph buttons in the band, dial and movement signed, accompanied by vintage box in velvet brown.
Trade with other chrono 70' even higher price with my adjustment
my price for this is 2500 euro.
Tank's Chronotrader !

Picture here:
http://s1183.photobucket.com/user/incursore61/library/breitling%207104