P=15, Ferz=25, N=45, B=45, Commoner=60, R=75, Q=135 are the numbers I have worked out over the years. See my Shatranj Kamil (64)
page for an early listing of these (endgame) values.
I can accept the values of Wazir=22 and Alibaba(DA)=32. Andy Maxson pointed out that the Alibaba (Elephant on this page) does not have a value of 37. Ralph Betza has an index page here for his work on different chesspieces. The WF (Commoner) is tricky to evaluate, as its strength varies during the game. My philosophy is: eventually you are going to have to play an endgame, so that is where the 'true value' of each piece is determined. Regarding the DA (Daffy or Alibaba or Elephant), Betza believes that the DA is noticeably weaker than the N in practice. Elsewhere he has stated that the practical value of a DA-rider piece seems to be a bit less than a Knight. In other words, changing a weak piece (limited to one quarter of the board) to a rider does not seem to add much value.
I can accept the values of Wazir=22 and Alibaba(DA)=32. Andy Maxson pointed out that the Alibaba (Elephant on this page) does not have a value of 37. Ralph Betza has an index page here for his work on different chesspieces. The WF (Commoner) is tricky to evaluate, as its strength varies during the game. My philosophy is: eventually you are going to have to play an endgame, so that is where the 'true value' of each piece is determined. Regarding the DA (Daffy or Alibaba or Elephant), Betza believes that the DA is noticeably weaker than the N in practice. Elsewhere he has stated that the practical value of a DA-rider piece seems to be a bit less than a Knight. In other words, changing a weak piece (limited to one quarter of the board) to a rider does not seem to add much value.