Do any of you wonderfrul tennis afficianados that frequent this magnificently informative and entertaining website have any information on a Donnay Formula One? I have done extensive research and found volumes on the Donnay Formula Pro and Pro One, but have found zilch on the Formula One. The racquet is a gorgeous purple and black on the face and black around the outside of the frame. Inner throat says "Midsize" on one side and "Suggested string tension US: 50-55 lbs; Intl: 22-27kg" on other side. Outside of throat says "DONNAY" on one side and "Graphite Compound Technology" on the other side. Top of hoop says 'FORMULA ONE". 11 and 1 o'clock positions (on opposite sides) on face say "Nodal Line B"; 5 and 7 o'clock positions(on opposite sides) say "Nodal Line A" and "F1". 2 to 3 o'clock position (and 9 to 10 o'clock on opposite side) says "DONNAY" in bold white letters on red background. The head appears about 85 sq. inches and the strung weight is about 12.7 oz. Pattern is 16MX19C. The sweetspot is very small and the frame lets you know it when you miss it. However, when you find it, you think you have a pass to ball-striker's heaven. Thank you in advance for any info.