Are any of these reverses rare for the 1831 half dollar. I have 3 different reverses.

Watchbelieve

opportunity

Obverse pics?

lkeigwin

From the upper left, clockwise:

O.101 R2 or O.115 R4. They share the same reverse.
O.102 R1.
O.112 R3.

So nothing very scarce.

FWIW, the location of the end of the olive branch relative to the 0 and/or C is not the best way to attribute bust half die marriages. I suggest you look at:

the 2nd T in STATES relative to the I of PLURIBUS
the beginning and ending points of the scroll relative to the motto letters
the O in OF relative to the first U of UNUM
the 5 in 50 and the talons above it
the proximity of the arrowhead to the 2nd A in AMERICA

Other good pickup points are the letters in the motto. Sometimes a letter is higher or lower in position than an adjacent letter. Sometimes letters appear to be joined or nearly so (e.g., the AM or RI in AMERICA; the ED in UNITED).

There are many other things such as where the letter A points relative to the denticles (when they're there), engraving slips to the shield lines, die flaws, etc.

And then there's the obverse to examine. Stars, denticles, bust points, ...
Lance.

Watchbelieve

BigMoose

Lance, you are a true Professor of Capped Bust Half Dollars.

ricko

Not being an expert in these coins, the first thing I picked up was the position of UM in relation to the A of America.... other details emerge as one looks at them... Thanks for the PUP's Lance...Cheers, RickO