Bruz: According to an unofficial Pfeiffer Beer website, this brand was released not only in GIQs (Grand Imperial Quarts = 38.4oz) but 40oz bottles as well. The website did not provide an image of the 40oz, but to see pictures of what the GIQ looked like, click here: 1, 2. If you can confirm that 40s of Pfeiffer existed, please email me!