Thank you IO and RB. I had no idea it was discontinued that early. Of course, when you're browsing through books looking at black and white photos, it's sometimes hard to tell when a photo was taken. Given the information you have provided, I think I'll model a 1940 boat with the Netzsaege/Netzabweiser and maybe a 1943-44 with the extended wintergarten and no net cutter.

Thanks again. Good Hunting!