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Posted 03/23/2012 9:08 pm
Ooh, I like pharmacy. The weight is 2 apothecary drams. The 3 in the middle is really the symbol for drams and the ij are the old school roman numerals for 2. The addition of the 120 (you are correct to call it grains) makes sense if you consider the fact that Europe had no universally accepted units for measuring weight at the time. The difference between and ounce in two separate European countries could be as high as several grams. By matching the number of grains to the number of drams, you effectively define this as an apothecary weight.
