Dili
Unfortunately, going back to the GAF exchange rates is a remarkable undertaking. I've been trying for at least 10 years, but even official documents are often incomplete and contradictory. Complicating the matter is the fact that batteries and groups were almost always renumbered and often even changed in size. To this it must then be added that for example in the case of the 149/35 coastal groups they often came from the renumbering of disused Army groups. At this point we often find ourselves with groups having the same numbering, a different caliber and a third group with the same numbering .... and finally the groups that left for the AS were all recalibrated and turned into as many line groups losing all the previous connotations then war during were reformed using cannons of often French PB ..... for example the much celebrated 14.o former GAF grouping became coastal was in fact a mix of ex GAF pieces, of new construction , two batteries were brand new pieces of 149/19 that for lack of adequate towing had been miserably adapted to coastal and other three were coastal of ..... new numbering ....... therefore in this case I can be of little help .........
All the best
maurizio