Want to Buy WTB, filter ring and mounting screws S-M-C Takumar 50 1.4

I have a nice lens but carrying it aqround in my bag the 3 mounting screws dissapeared, the filter ring came of and is now damaged.
It seems a shame to discard a nice lens for want of some small bits just becuase I can buy another for $50. Does anyone have dead one they might like sell some bits off?

Thanks,

MattC