I finally found it!

I found this title with english subtitles available from http://www.ebay.com/itm/Pane-vy-jste-vdova-DVD-1970-Czech-comedy-English-subtitles-Vaclav-Vorlicek-/130981280584?hash=item1e7f17bb48

this dvd is also available from czechmovie.com
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czechmovie.com, you can buy any film at a 15% discount with the discount code FREE15!