Variable EPSG_54091`Const`

EPSG_54091: "+proj=peirce_q +shape=diamond +lat_0=90 +lon_0=0 +k_0=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +type=crs" = '+proj=peirce_q +shape=diamond +lat_0=90 +lon_0=0 +k_0=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +type=crs'

Peirce quincuncial North Pole in a diamond