Frimindeks 2010: The web catalogue for stamps from Denmark and Greenland

The serie: Numeral or in Danish: Bølgelinie.

Illustration	Type watermark	Price/pris (Euro) C = less than 0.10 Euro	Note
	vm3	0.10	Grey. With watermark type 3 (crown) - vm3. The colour changes in different variations of grey from darker to lighter, with a more or less clear colour and with different elements of greenish, brownish or olive in the grey.
	vm4	0.10	Grey. With watermark type 4 (crosses) - vm4. The colour changes in different variations of grey from darker to lighter and with a more or less clear colour. Stamps with vm4 was issued in 1913. From se-tenant stamps see se-tenant 1919-30 exist a colour often mentioned as pearlgrey. It is a rather dark and fat grey colour - see below.
	vm4	100,-	Pearlgrey. With watermark type 4 (crosses) - vm4. Issued 1919 and only known from printings in connection with bo51 see se-tenant 1919-30.