Olde Thermador oven model WO-16 serial 9209 - when's it from?

[slantsixdan]

Anyone know anything about a Thermador WO-16 wall oven, serial number 9209? Trying to figure out when it was made. Model number makes me think "Wall Oven, 16 inches", and I am WAGging that the serial number might decode as 1949, the 209th day (around June 26, 1949), which might fit with the 1950-51 build of the home. And since we're talking about it, it works, but I'm a little concerned about what looks like the distorted part of the upper heating element coil. Where'll I find new? Here're some pics: