Sealed 3 piece mold - 11 and 1/8" tall with a double ring applied lip and a sand pontil. Applied seal reads "A.S C.R". This stands for All Souls Common Room, which is found at All Soul's College in Oxford, England. This college was started in 1473 by Henry the VI. And yes, earlier examples can be found with this seal on it. These bottles would make a nice little collection all by themselves. Ca: mid 1800's.
Photos and info courtesy of David Dunaway. Much thanks.