X-1 "Glamous Glennis"Bell X 1 airplane model. Hand crafted with care, the X 1 "Glamous Glennis" model is an exquisite piece of art perfect for any collector. Show off your love for the finer things in life with this sophisticated model, sure to take any admirer's breath away. The diminutive Bell X 1 rocket research plane was the world's first aircraft to break the "sound barrier" and achieve supersonic flight on Oct. 14, 1947, when "Chuck" Yeager's "Glamorous Glennis"