Here's a 20 point token, also in bronze, along with a long descriptive text in German. Ramming the first paragraph through Google Translate, we find the following factoids:
- The tokens were issued in 1932, to mark what would have been Lingner's 70th birthday had he lived; he died in 1916.
- Denominations issued were: 2 and 5 points in aluminium (mintage 1.325 million each), 10 points in brass (mintage 1.05 million), 15 and 20 points in bronze (mintage 500,000 each).
- Some trial strikes were made in precious metals and kept by the company.
Being from 1932, they're not technically "notgeld", but they're usually classified as such anyway. And with such high mintages, I'd say they're still probably common enough to not attract much value. $1 might be too cheap now it's been identified properly, but $10 does not sound unreasonable.
Here's someone selling a full set of five on eBay for $39.50 BIN.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis