I have just added Rubycoin to my mining revenue and marketcap site
www.altcoinstat.comTherefore I have used block reward vs. block count. From source file (main.cpp, line 1083+) I have concluded the following:
block count block reward
< 21k 500
> 21k, < 42k 250
> 42k, < 63k 125
> 63k, < 84k 75
> 84k, < 105k 50
> 105k 25
Can someone please confirm this is correct?