I would like to ask if anybody can help me with MSI abbreviation. It was used in list of bombers in some kind of form. Each plane has a different one and it was number of 3 digits or 2 letters plus 3 digits.
I suppose it may be some kind of indentificator which was unique for each plane.
do you mean as in eg Halifax LV907 NP-F - where the LV907 characters indicate its place in the production sequence - and the NP-F are letters indicating its allocated squadron ?