meticulously annotated collection includes the normal set mint in addition to 60.1a (9¼mm spacing), 60.1b (9¾mm spacing), 61.1b (9¼mm spacing), 61.1d (9¾mm spacing), 62.1a (9¾mm spacing), 62.2 (dropped "E"), 62a (inverted overprint), 62a.1b (inverted overprint, 10½mm spacing), 63.1a (8½mm spacing), 63.1b (8¾mm spacing), 63.1c (9¼mm spacing), 63.2 (dropped "E"), 63a (inverted overprint), 64.1a (8½mm spacing), 64.1b (8¾mm spacing), 64.1c (9¼mm spacing), 64.2 (dropped "E"), 65.1a (8½mm spacing), 65.1b (8¾mm spacing), 65.1c (9¼mm spacing), 66.1a (8½mm spacing), 66.1b (8¾mm spacing), and 66.1c (9¼mm spacing), plus some booklet pane single spacing varieties and a few more minute spacings not listed in the checklist, mix of mint and used but most of the high values mint, an extraordinary collection which would be nearly impossible to duplicate, view scans to fully appreciate