how to say ”(尤为)难得“ in English? How would you say "难得“ and ”尤为难得“ in English?

For example, 


  他在自己生活困难的情况下，资助老弱病残，尤为难得。
"难“ means hard or difficult
"得“ means to obtain


Combining the two, ”难得“ means something that is hard to come by.


"尤为" (formal) means especially or particularly


Putting all together, "尤为难得" means especially hard to come by or a rarity.