Hi Licht & Feuer,
I know, why I do not like EBT, but enjoy Eurotracer much more - the reason: You cannot work out any logical system in the controlnumbers, the way EBT shows them. I still find it stupid, not to tell a number, because you (I mean the EBT community) are so 'geil' to have hits. That is why your question is difficult to answer, but I will try.
Spain uses the first five figures of the controlnumber, to define the sheet position, i.e. the first ever number (theoretically) printed was sheet position A6 = V00000xxxxx* - and one sheet has ascending numbers going up to J1 = V00059xxxxx*. This by the way would be charge 1. Charge 2 would be A6 = V00060xxxxx* .... I1 = V00119xxxxx* and so on.
Usually, Spain uses one printing code for each charge, with the odd exception, which are for example charge 11 (V00600xxxxx* up to V00659xxxxx*), which was used by M001 and M002. BUT, and this is the big BUT, they had another system, using the codes. M002 was used for the numbers going from Vxxxxx00000* up to Vxxxxx79999*, and M001 was used for the high numbers of Vxxxxx80000* onwards.
A similar thing happened in charge 41 (V02400xxxxx* ... V02459xxxxx*) where M002 and M003 shared the same codes for the sheet position, only this time M003 was used for all numbers up to Vxxxxx59999*and M002 was used for the high numbers (again) Vxxxxx60000* and higher.
As here in EBT you do not dare to tell more, it is impossible, to really clarify your issue - but you may try yourself, to find a solution. Your notes may use three charges. Charge 142 (A6 = V08460 .... J1 = V08519), charge 143 (V08520 .... V08579) or charge 144 (V08580 .... V08639).
Maybe you care and let me know all your numbers, which I will not use to have hits - I do not inform EBT about my notes (although I have listed some 26.000+ in Eurotracer), but which I will use to possibly find a logical solution to your question.
By the way, just in case anyone interested in controlnumbers, to have more hits, all my numbers are available in full

in the database of ET. Just open 'database', open for example my file 'Katalog L Finnland' and you find all my finnish numbers !! Do you want German numbers, open 'Katalog X Deutschland'. I have no qualms in telling anyone my Euro-controlnumbers, because my interest are not the hits, but the secret behind the numbering systems - and this can only be done, once I have a true database and not numbers like V085xxxx049*, which are of no use whatsoever.
ICU
ye olde