There are 7 different types of 2-digit radar, each equally rare (90/10M), but which seem to carry slightly different premiums:
1000001
1001001 -- repeats after 3rd digit
1010101 -- repeats after 2nd digit
1011101 -- repeats after 4th digit
1100011
1101011
1110111 -- repeats after 4th digit & almost solid
I think the most popular would be like 1010101 where the numbers repeat every 2 digits. $150 on an older issue would not be unreasonable for one of those, where closer to $100 might be appropriate for the lowly 1101011 for example. Of course, if the digits are actually "0" and "1" rather than any other of the 90 possible combinations, it might be worth even more as a
binary or
digital number.
I wonder which types of 2-digit radars are the favorites of other forum members?