Yeah, we're a little too young to claim full enjoyment of this modern design icon, outside of a few film cameos and its spot at the MoMA, but Ericsson's Ericofon (pictured), originally released in the 50s, is certainly a design worthy of the Bluetooth treatment. In a well-documented hack done up by Santiago Q., the handset can be set up to use the rotary dial, pump out the original Ericotone ring, and even offer up a dial tone when ready for input. Santiago has the software and instructions freely available on his project blog, and there's video demonstrating the handset in action after the break.