Bruce,
There were 35 of the 2004 convertibles, 147 of the 2005's, 55 of the 2006's and 2 of the 2007's (from Mexico, with an advanced year, same as 2006. The advanced year model is allowed by Mercedes within Mexico). That's a total of 239 convertibles out of the 1026 European models from 2004-2007 converted by G&K.