Easy to figure. Remember the safety issues at the Phila Mint when OH-Ps were to be struck? OSHA had the mint shut down for six weeks to allow for the safety violations to be corrected. OH-Ps were destined, for quite a while, to be the "key state" for the series. But that fell apart, just like the NJ-Ds were originally supposed to be the key. As of the release of MN quarters, IA-Ps are the lowest mintage. However, because the Elvis estate folks colorize TN quarters, TNs seem to be hot. And, of course, if you want to go the error route and believe urban legend stuff, any quarter can be considered *rare.* If anyone's interested, here's the latest:
Rank State/Mint Mintage
1 IA-P 213,800,000
2 OH-P 217,200,000
3 ME-D 217,400,000
4 AL-P 225,000,000
4 MO-P 225,000,000
6 IL-P 225,800,000
6 MI-D 225,800,000
8 WI-P 226,400,000
9 WI-D 226,800,000
10 AR-D 228,000,000
11 MO-D 228,200,000
12 AR-P 229,800,000
13 ME-P 231,400,000
14 AL-D 232,400,000
15 MI-P 233,800,000
16 IL-D 237,400,000
17 MN-P 239,600,000
18 FL-P 240,200,000
19 FL-D 241,600,000
20 IA-D 251,400,000
21 CA-P 257,200,000
22 TX-D 263,000,000
23 MN-D 263,000,000
24 CA-D 263,200,000
25 TX-P 278,800,000
26 TN-D 286,468,000
27 MS-D 289,600,000
28 MS-P 290,000,000
29 NJ-D 299,028,000
30 IN-D 327,200,000
31 PA-P 349,000,000
32 KY-P 353,000,000
33 PA-D 358,332,000
34 TN-P 361,600,000
35 LA-P 362,000,000
36 IN-P 362,600,000
37 NJ-P 363,200,000
38 KY-D 370,564,000
39 DE-P 373,400,000
40 LA-D 402,204,000
41 DE-D 410,424,000
42 OH-D 414,832,000
43 RI-P 423,000,000
44 VT-P 423,400,000
45 NC-D 427,876,000
46 RI-D 447,100,000
47 GA-P 451,188,000
48 VT-D 459,404,000
49 GA-D 488,744,000
50 NH-D 495,976,000
51 MA-D 535,184,000
52 MD-D 556,532,000
53 SC-D 566,208,000
54 NY-D 619,640,000
55 NC-P 627,600,000
56 MA-P 628,600,000
57 VA-D 651,616,000
58 NY-P 655,400,000
59 CT-D 657,880,000
60 NH-P 673,040,000
61 MD-P 678,200,000
62 CT-P 688,744,000
63 SC-P 742,576,000
64 VA-P 943,000,000
Jerry