Hi Andrew,

Please find below the price reference of various condition of Pick no.99d quoted from Krause Standard Catalog of World Paper Money (SCWPM) : General Issues 1368 - 1960 (2013 edition): 
UNC: $15.00
VF: $7.50
VG: $1.50

However, I often find that the prices quoted in SCWPM are not accurate, and sometimes far above / below the market price. For more accurate price of French banknotes, I would recommend making reference to "Les billets de la Banque de France et du Tresor" published by Claude FAYETTE. With reference to the 2012-2013 edition (that's what I have, and there shouldn't be any significant change in the price over the past few years), the price for 10 France (Mineur) - Type 1941 (F.8.4) with date of creation 15-10-1942, the reference prices are as follows:
NEUF: €40
SPL: €20
SUP: €10
TTB: €6
TB: €3

To the best of my understanding, issue date is one of the major factors that determine the price of a French banknote, since the issue quantities for some issue date(s) are much less than the others, and hence even though two banknotes are of the same type and condition, their price may differ by 10 times or more if one of those has a rare issue date.

In my French banknote collection, I have got three 10 France (Mineur), all in NEUF (UNC) condition and rare issue dates (two 11-9-1941 and one 19-4-1945), I bought them from various auctions, one of them cost me $264 and others two are around $170 each, which is closed to the reference price (€160) quoted in the Claude FAYETTE reference book.

I hope that you will find the above information useful.

Regards

Edward Chow
 

My father was a paratrooper with the
U.S. Army 101st Airborne in WW 2 
fought in D Day and the Battle of the Bulge. 

He purchased this bank note while in the 
European Campaign as well as others like
Netherlands 1938 paper. 

Would you please direct me to a source 
to determine the value. 

Thank you. 

Best,

Andrew William McClelland

Nashville,TN