In other words, a specialist in radars will not care that it is an error, and an error specialist might not care that it's a radar or any kind of special serial number.
Other kinds of combination notes are replacement-errors and insert-radars.
Comments?
Personally I would agree with you on this...If I was a collector of error notes, my thought would be to buy it because of the mismatched numbers, not because of it being a partial radar note. To me I would not pay any premium for it.
At the same time if it was an insert note and I was not an insert collector (which I am) that again would not have any appeal to me, and again I would not pay a premium.
I think that unless a person collects a variety of note types and it maybe happened to fall with that criteria it may be worth more to that individual, I think in the majority of cases its value will be based on the fact that it is an error.
I have seen a number of notes, ie radar inserts and rotator inserts, but then again I believe only an insert collector may want it and pay a touch more because it is a special note within their specialty....
Only my opinion
FRIEDSQUID