I called the diocese, my dad’s church, and the Hispanic diocese (apparently that’s a thing? I’m Hispanic but not Catholic, what do I know?) The Hispanic diocese secretary said he brought it in to speak to her about it, and she told him it was okay to be kept in private collection, and if he wanted to donate it, it had to be kept in veneration for 50 days first. I can say with a reasonable degree of certainty that he still has it, but he is refusing to answer me about it. Wish me luck, pray for me if you believe in something: this is not about religion, this is about history: family history. That relic is ours by rights and is a piece of family history I will not yield without a fight.