Lot 273
1939, Caritas 10-50s., essay block of with an extra impression of 50s. with horizontal alignment on the 25s., The single 50s. essay is in a lighter colour tone than the 50s. essay in the block. Also used for perforation trials, the 25s. and 50s. have double perforation. This essay block is pictured in Eesti Post No.54, p.20
