CH 2009 ATM Type 21z, 4 values cancelled last day in use (Frama stamps) 11.05.11

Switzerland 2009 ATM (Frama stamps)
Type 21z Helvetia small, black, green outline of Switzerland shiny, Paper with visible colored fibers, non-fluorescent, Swiss border outlines unsharp,
4 values 0020 with Full Cancellation on last day in use on 11.05.2011 of Lausanne, Bern, Basel and Zürich, luxury quality,
SBK -, ZST -, Michel -, Seitz 25, Schalch -.

Explanations: Duration: 31.01.2009-11.05.2011, cliché: HELVETIA (small), type of digits: wide, printing color: black, paper: with visible colored (blue and red) fibers, matt gum, fluorescent: not fluorescent, impression cylinder: shiny white-greenish-olive outlines of Switzerland (border outlines) sharp, color ribbon: nylon ribbon III, printing: Courvoisier, La-Chaux-de-Fonds.