Ok it's time for more theories on these uncommon bread cards.
The following quote talks about the history of the General Host Corporation which was the General Baking Co for many years.
"The history of General Host may be traced to 1911, when the General Baking Co. was incorporated in New York as an amalgamation of 19 former baking businesses covering many major cities between New Orleans and Boston."
This quote reveals quite a bit if you think about it. The D304 backs tell us some of those bakeries (Weber, Fleischmann, Martens) that General Baking owned around the region. I believe those backs are very scarce because they were only issued out of those three bakeries. The General Baking and Brunners backs which don't mention specific bakeries were more of the flagship premiums with the GB backed cards probably inserted into bread around the region at several different bakeries. Brunners at least at different bakeries around Buffalo instead of just one.
On to D303. We know (from the backs again) that Mothers backs were from New Orleans and were probably only issued in that immediate area. Now I know that NO issues are tough anyways, but these are REALLY tough even compared to GB backed D303s. It might be safe to say again that GB backed D303s (because they don't mention any specific bakeries) were inserted into the three different breads at many of the 19 bakeries "between Boston and New Orleans."
Any thoughts?
Rob
Quote taken from:
http://www.fundinguniverse.com/compa...y-History.html