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Pi filter circuit at ANT pin - Exact part numbers

Hi. I can see a Pi match circuit at ANT pin on nRF52840 in the reference circuit (Noise filtering ckt after internal balun) with values 1pF, 3.9nH and 1pF. Can you guys please share the exact part numbers for these L and C used for  which you to get 50ohms at point where RF is mentioned on net? Also how good a 50ohms is expected to be at this point on reference boards you made for these exact part numbers used. Do you have ideally a S11 plot or something like that you can share? With reference circuitry and my COG parts I get around -11dB return Loss so hoping to check with you guys. Cheers

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