Would like so help identifying the serial number on the VAX 11/780 I just acquired. The Model is 11780-FE not sure what the FE means. The serial is FX03307. I am assuming the FX would mean Foxboro MA ? 0 would be 1980. 33 would be august and 07 would be the 7th one made that year? Went with the logic tube manufacturers used to use.