At some point in time, after the creation of the original design, the foot was removed by patching the mold. Subsequent bottles blown were of the more conventional round cylinder form, (sans the "foot"), but the mold repair area can be plainly made out; much the same as the A. Fenkhausen / Old Pioneer Bear amber glop top with the rivet repair plate on the rear, which was blown in San Francisco during roughly the same time frame.
The glass works that produced the bottle is unknown, but a side by side comparison with the word "WHISKEY" on an original E. G. Booz, produced by Whitney Glass Works, reveals an uncanny similarity in embossing patterns. In fact, with the exception of the "S", they bear a striking resemblance to one another.
Later, they had an acid etched picture shot glass produced to advertise the brand. It also sported the now famous bull.
And that's no Bull~