Does continuing to donate past 999 achieve anything?

Related question - What does the donation machine do?
In BoI: Rebirth, you can donate to a machine in the shop room, and as you put in more and more money, you can unlock things.
When you hit 999 coins in the machine, you unlock an item and the machine blows up. I figured that was the end of that.
However, on my next playthrough, the machine was back! So I have dutifully been feeding more money into it. However I'm up to a couple of hundred gold in there now and it doesn't seem to be doing anything.
Am I wasting my money? Or will this 2nd round of donating eventually unlock something awesome?
Best Answer
No, you won't unlock anything, according to BoI: Rebirth wiki.
Moreover, it's not recommended to add a 1000th cent to the Donation Machine and make it blow up. That's a huge waste of pennies! Because if you destroy it the machine will only drop a bunch of dimes that you have to use in that run and the penny counter will restart from 0 in the next one.
So it's better to keep the Donation Machine as a penny-bank that exchanges "bombs for money".
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Why does the greed donation machine jam?
The jam chance updates in real time, so even with a character that has never donated to the donation machine prior, the machine will most likely eventually jam given enough donations....Jam Chance.Coins DonatedGreed Mode Jam ChanceExpandGreedier Mode Jam Chance181-18313%1%184-18614%187-18915%190-19216%17 more rowsHow do you max out a greed machine?
Here are some of the things I used:Having 999 coins in your donation machine isn't necessarily a good thing
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