Hi Stig,
In regard to the Maryland's in the HK serial number range.
All that is in the AB HA100 - HZ999 book is as follows -
It does not specify Mk I or Mk II just "Martin 167 Maryland".
HK836 - origin unknown, no record, probably ex French.
HK845 - Presumed escaped from Vichy AIR Force, SOC 22.2.42.
HK865 - Impressed, probably ex Vichy AIR Force, no record of service found.
With regard to the SAAF Marylands 1601 - 1606.
I assume that these would have been Mark I's rather than Mk II's.
So from the AB books and "85 Years SAAF". Here are serial numbers that served with SAAF that did not receive SAAF numbers as far as is known. So 1601 to 1606 may be in these numbers ?
Maryland I's
BS773
BS777
AR722
AR749
Maryland II's
AH283
AH286
AH287
AH288
AH341
AH344
AH349
AH350
AH351
AH352
AH354
AH358
AH359
AH361
AH362
AH363
AH364
AH365
AH366
AH370
AH381
AH382
AH383
AH384
AH385
AH396
AH397
AH398
AH400
AH401
AH404
AH405
Also I notice in "85 Years" that following -
SAAF number - Squadron - four digit number - RAF number.
ie
1608 - 24 - 1851 - AH304.
So was "1851" a Martin construction number or a French number ? It is not explained in the book as far as I can see.
All the best
Alex
PS:
Re your ref to AM78, AIR 78 is lists of names .
I think you may mean AIR 81 which is aircraft and airmen accidents/losses ?
Here is a link to Air81 Marylands up to the end of 1942,(63 in all). Not all the serial numbers are correct but a mix of RAF and SAAF or maybe French number ?
This happens across-the-board for all aircraft types unfortunately.
https://discovery.nationalarchives.g...rt=1&id=C16484
Alex