Trading duplicate Sikhote-Alin shrapnel fragments (3 pcs) for quality pallasite slice

Have three Sikhote-Alin iron meteorite shrapnel pieces from the 1947 fall in Russia. All are twisted regmaglypted fragments — classic shrapnel morphology. Weights: 18g, 24g, 31g. All three have excellent regmaglypts and fusion crust preservation. Looking to trade the full set for a pallasite meteorite slice. Prefer Esquel, Fukang, or Brahin but will consider others. Minimum 20g slice with intact olivine crystals. Must have documented provenance or COA from recognized dealer. I can send close-up photos to any serious trader. These pieces have been in my collection for 8 years — duplicates only because I found a better Sikhote piece last year. Straight even trade, no cash needed on my end if the pallasite is quality.