Lot 30753 – 1864, Study on two album pages of the 1/2 Real Grey

1864 Study on two album pages of the 1/2 Real Grey La Guaira St Thomas private shipping stamps, comprising 23 unused examples, including top right corner marginal block of four (climatic toning), which is the only known example with a perforation change and illustrating the drawing displacement in the second row, a scarce and fine assembly.