Michael,
if you spot them, any time in the future, please email me.
Varieties (proofs) of the 40 paras, the overprint is signed by "Nouri"

OTTOMAN NAVY ASSOCIATION (TURKISH NAVAL LEAGUE) STAMPS
(A) ISSUE OF 1914
These stamps were originally issued by
the Ottoman Navy Association in 1914
as 1, 2, 5, 10, and 40 para labels
to be voluntarily purchased to
support the Ottoman Navy Association.
The center design depicts various
warships of the period: the 1 and
40 paras a destroyer, the 2 and 5
paras a torpedo boat, and the 10
paras an armoured cruiser.
The vessels are unidentified in the
literature.
(B) ESSAYS OF 1914
In recent years a number of imperforate
printer's proof, trial colour runs have
come into the market. One Istanbul
authority reports that a "complete set"
consists of 26 colours and that one
such a lot was auctioned several years
ago, in Europe.
Certainly, the available literature does
not mention these colour trials so the
exact number is currently one of those
unanswered questions surrounding this
issue.
(C) REVENUE OVERPRINTS OF 1915
In 1915, all but the 40 paras value
of the Ottoman Navy Association
issue were also used as revenue
stamps.
Six stamps were created by over-
printing "for immigrant aid" and a
new value in red.
Three of the six stamps are :
5 piastre on 1 para orange;
100 piastre on 2 paras blue; and
100 piastre on 5 paras green.
(D) REVENUE OVERPRINT OF 1916
In 1916, a black overprint, "paras 5 paras" /
"kerosene and match revenue stamp" was
applied to the 1 para orange Ottoman Navy
Association stamp.
(E) POSTAL OVERPRINTS OF 1921
(overprinted for postal use by the Anatolian
Government)
Because of the shortage of stamps available
to them, the Ankara Government appropriated
existing supplies of the Ottoman Navy
Association issue in Anatolia and
overprinted them in 1921 for postal use.
The issue contains numerous errors and
varieties because of the lack of printing
expertise and sheer carelessness.
(i.e. invert overprints, wrong years, etc.)
This is shown here by an inverted overprint
on the 5 para green.
It should be noted that overprinting low
values such as the 1, 2, and 5 para
denominatons was so inconsistent with
prevailing postal rates that these stamps
were most probably useless for actual
postage.
(In 1933, there were 80 paras to one US cent.)