EPSG_21251: "+proj=tmerc +lat_0=0 +lon_0=153 +k=1 +x_0=51250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs" = '+proj=tmerc +lat_0=0 +lon_0=153 +k=1 +x_0=51250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs'
GSK-2011 / GSK 3GK zone 51
metre176.26,151.5,46.72,154.5