d04271r: 
backs with
standard frame
23
d04271r672 d04271r673 d04271r1063 d04271r1087a d04271r1087b d04271r1389
d04271r2252 d04271r2449 d04271r2998a d04271r2998b d04271r3336  
d04271r379 d04271r1590 d04271r1590b d04271r1857
d04271r2871a d04271r2871b d04271r3320 d04271r3369