1939 S/42, O [ serial number sufix] magazines

[robbt]

hi guys , i have a question , I have a 1939 S/42, O [ serial number sufix] , when I received the luger it came with a late FXO bakelite based magazines , both original magazine were missing.
removing the dream of finding the original serial numbered magazines what would be the next best set of magazines to look for ??
were there O [ serial number sufix] magazines that were produced without serial numbers ?
the Luger has very sharp checkering on the grips and about 93 to 95 % original blueing .
I am new to Lugers and would greatly appreciate your advise.
many thanks, robbt