Is the Catena Zapata the only wine that the winery markets with the grey cut-out sock? The reason I ask is that while wandering through BA today I saw a 1994 priced at 2950 Pesos a bottle . I have a bottle of wine in the grey sock from the early or mid-90s at home and am wondering if I am sitting on soemthing of immense value (well immense price at least). I´m sure I wouldn´t have paid more than $US40-50 for it all those years ago.