From the write up above.
"Conclusions: The current Shulton and vintage Shulton products, overall, are very similar. What small differences exist between them may possibly be attributed to the age of the sample or point to a natural variation in components in some essential oil. It is the author's opinion that Shulton is using the same recipe in India that was used to manufacture the vintage sample. The P & G Old Spice appears to be significantly different from the other two Old Spice samples. I believe that there may be some evidence here for a change in recipe sometime between when the vintage Old Spice was produced and the current recipe. Whether that supposed change occurred before or after P & G obtained the product line is impossible to say. Finally, it appears that the Vijon flavors and fragrances chemists have done an admirable job at reproducing the current P & G product."