Datapoint Tayo/Indefinite articles

It is possible to omit the indefinite article:

na loto pu mwa
[have car for me]
'I have one car.'

I am not sure whether the variation is idiolectal or whether there is a slight change of meaning, with the variation with a closer to the numeral sense.

Values

Indefinite article identical to numeral ‘one’

Example 57-11:
a ŋgra latam
a
indf.art
ŋgra
big
latam
table
a big table

Source: Ehrhart 1993: 126

Example 57-36:
na a loto pu mwa (selma)
na
exist
a
one
loto
car
pu
for
mwa
me
(selma)
(only)
I have one car.
Confidence:
Very certain