515 & Classic 1CR Box Pattern
I forgot to mention that the 515 and Classic 1-CR boxes have the same "fur" pattern--just different colors. I thought that was interesting, because of the 15-year timespan in between the two models.
Other backgrounds that I know of that have the same background pattern or color are:
- the 516 & 517 - tan & white tartan
- the 519, 560, and 561- repeated small, gold Kirby logos
- the 514 & 518 - linen
- 2CB & 3CB - white
- Heritage II & Heritage II Legend, & Legend II - grid with diagonal repeating Kirby stripe
- GSix, GSix 2000 LE, GSix 2001 LE - coal with yellow cotton fibers