A large double row Walkers Patent Powder Magazine complete with all its tins. This was patented on the 7th September 1810 (No.3373) by James Walker.
Some very interesting excerpts from The Naval Chronicle Volume 36 for July – December 1816 giving respectable testimonials of the complete efficacy of Mr Walker’s barrels in preserving the powder for due use, and from accidental explosion. It’s fascinating to see the increase in range.