soldner to wgs84 for soldner coordinates 26197,19294

gistfile1.js

#!/usr/bin/env node
var proj = require("proj4");
proj.defs("EPSG:3068", "+proj=cass +lat_0=52.41864827777778 +lon_0=13.62720366666667 +x_0=40000 +y_0=10000 +ellps=bessel +datum=potsdam +units=m +no_defs");
console.log(proj("EPSG:3068", "WGS84", [26197,19294]));