The ingot I'm talking about is a very rare silver ingot used in Finland a long time ago, before the 10th-12 century. Its 50mm long and weights about 40grams. As it was used in trade but did not have an actual value (it was worth the amount of silver in it) These ingots are extremely rare, and only a few have survived.
Here is a picture of one (This one is currently in a museum in Turku):

It may have been even larger, but some pieces may have been cut from it.
(https://www.turku.fi/blogit/kuukauden-esine/maksuvaline-ajalta-ennen-rahaa)
