According to WB4HFN's Drake serial number database (http://www.wb4hfn.com/DRAKE/DrakeSerialNumberDatabase.htm), the highest TR7 serial number reported is 10582 with a QC date of May 5, 1981 and the lowest TR7A serial number is 10822 with a QC date of Oct. 28, 1981. So this 11002 would beat the highest TR7 serial number in that database. 73 Lee WB6SSW