These are both the antique versions that I got from Holland. I don't have the "newer" versions of these in the other material.

Both these have been revalued, the 10.000 by an edge stamping of "100 NF". The 500 has no new value stamped, but a raised comma has been added to the chip by some unknown process.

I'd be interested in finding the 10000 and 500 that match these old ones.

Do we know which company made these early chips? B et G, maybe?