Often in oval shapes, but seen in round, shield, and other configurations, these "personalized keychain" tags were custom-stamped, so each is a one-off. Fraternal organizations like the Elks, Odd Fellows, etc. often used them for fund raisers. The lodge would buy a "kit" of blank tags and a set of letter/number dies, and then stamp and sell them to members for a bit of a profit. I think jewelers also offered them for sale. They are generally made of a nickel alloy known as German Silver. Not real silver.
When I first started collecting these in the 1990s, the first ten or twelve I got were at 75¢ each. The prices have risen up to around $10 each, although ones from popular states (TX, NV, etc.) and those with "interesting" information, like this railroad-related one, command higher prices, say up to $20. If I were to find one from an ancestor of mine or from a famous person, I'd pay more.
The 1887 Omaha, NE city directory shows Paul Heinrich as assistant auditor for the B & M railroad. His son's obituary states that Paul Heinrich was for a time the private secretary to Grover Cleveland in the former president's law firm.
John in the Great 208
