Originally posted in C&Q in the EE. Figured I might try here also.  original post  Sorry for the photography, not my strong suit. Thanks for any help.

http://www.cruffler.com/historic-may01.html

Read this.



Image Credit:  Vanderlinden, Anthony, The Belgian Browning Pistols, Wet Dog 
Publications, Greensboro, North Carolina, 2001: Page 140
Holland: The Dutch government placed its first order for Model 1922 pistols in October 1924.  The 2,000 7.65mm pistols in this shipment received the Dutch designation Pistool M25 No.1, and was intended for issue to two different law enforcement agencies.  The Koninklijke Marechaussee, or Royal Military Constabulary,  received approximately 1,200 pistols from this order, while the Politie Troepen, or Police Troops, received the remaining 800.  In the following year the Dutch expanded issue of the M1922 to machine gun crews.  The M1922's issued to the Dutch Army were known as Pistool M25 No.2, the designation differing as the army guns were chambered for the 9mm Browning Short instead of 7.65mm.  Serialization of the M25 No.2 started at 3000, with the first order of 2,000 pistols being shipped in April 1926.  Military orders continued 
until the German invasion in 1940:
 

Date
Order Notes
1926
First 2,000 pistols
January 1930
20,000 M25 No.2 on hand
May 1932
24,000 M25 No.2 on hand
1936
M25 No. 2 serials reach 31499
1938
4,000 M25 No.2 ordered
1939
15,000 M25 No.2 ordered
February 1940
5,000 M25 No.2 received
May 1940
15,000 pistols ordered, never received
Additional Dutch orders were placed for law enforcement agencies.  In 1927, 150 M25 No.2 pistols were purchased for the Curacao police.  In 1929, the rural police force purchases 100 M25 No.1, and in 1934, the Dutch National Bank upgraded 100 M1910 pistols to M1922's.

Try oil on the metal and don't store it in the holster.  Actually pretty far gone finish wise.
 
Don't try to clean it off or try to remove the rust.  Just oil it. It will look a lot better.

Thank you for your time and the info.