Photo's and info submitted by RODALCO:

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DII series 6,10,16,20,25 Amps
DIII series 35 and 63 Amps
and 16,20 and 25 Amps inserts, note different size diameters.

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DIII series 35Amps black and 63 Amps orange
Siemens & Halske, VDE (German standards) KEMA ( dutch standards )
Flink is normal, quick acting.
P.G.E.M. Provinciale Gelderse Electriciteits Maatchappij (local POCO in central, East Netherlands)

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DII series 25 Amps, snail symbol is slow blow, e.g. motor rated.

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DIII series, Groenpol, Dutch Manufacturer of diazed fuses and switchboards:

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DII and DIII colour coded amperage indicators.

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DII in 10 Amp srew cap holder:

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Hazelmeijer panel in use in my basement workshop:

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