Is this a Dutch Apostle Spoon #1

[ApostleBloke]

Is this a Dutch Apostle Spoon?






Three hallmarks are visible.
1. Ɪ0 in a rectangle
2. DB in a diamond.
3. M in a square.

Can anyone please identify these marks to give an indication of country/region, date or maker’s marks?

Am I correct in saying the Ɪ0 mark is for 10 Penningen or 833.33 fineness (as seen on other Dutch silver)?

[oel]

Hi,

1. Ɪ0 in a rectangle . I believe it to be pretending a crowned O, pseudo duty mark used in 1807 #257
2. DB in a diamond. Pseudo maker's mark, in the way of #71
3. M in a square. Pseudo year letter, seen on spoons #224

Peter.

Source; # Valse Zilvermerken in Nederland K.A. Citroen