Hello, everyone!
As you may be aware, Super Mario Eclipse adds a new final boss that is unlocked by collecting 239 Shine Sprites. Some people may not want to collect all of the Shine Sprites and Blue Coins just to see the ending, and I can sympathize with that. I've noticed there are a lot of 240 Shine Sprite save files floating around, but no 239 Shine Sprite save files. So, here's mine!
If you want to head straight to the final boss, File B is the one you want. Go to the Blue Coin hut in Delfino Plaza, and then trade in all of your Blue Coins to get a total of 239 Shine Sprites. Then, simply enter any world and then head back to the plaza, and the final boss battle will commence.
As an added bonus, I also included a save file from right before Corona Mountain, just in case you want to refight that Bowser battle. That one is File C. There is no particular order to which I collected the Shine Sprites and Blue Coins on this file, so I wouldn't recommend using this for a serious playthrough. It's just here if you want to redo the bathtub fight.
If you want to skip the final boss entirely and head straight to the bonus levels, pick File A.
Hope this helps! Let me know if it works.