Sorry, but without more information, we can't help. In that time period Spain made tens of thousands of copies of S&W revolvers. They were generally of low to moderate costs. Abbreviation for Nationale de Armas- the makers.
Impossible to answer. What special edition? What is the serial number?
About 1913 for a Colt police positive special with that serial number.
Police positive heavy frame: 1925 starts with Serial # 250000. Police positive special & Detective special: 1908 starts with Serial # 1 Police positive .32 & target: 1907 starts with Serial #495000 Police positive .38 & banker's special: 1905 starts with Serial # 1
That Colt police positive special with serial # 594826was manufactured in 1951.
According to proofhouse.com a Colt police positive special with that serial number was made in 1957.
A Colt police positive special with that serial number was made in 1964.
A Colt police positive .38 with that serial number was made in 1931 and a Colt police positive special with that serial number was made in 1928.
A Colt police positive .38 with that serial number was made in 1930. A Colt police positive special with that serial number was made in 1928.
If you are looking for when made--see below: The Colt police positive .38 & banker's special with that serial # was made in 1940. The Colt police positive special & detective special with that serial # was made in 1930.
what is the manufacture date of a .38 police positive special serial number b 81
1958 for a Colt police positive special with that serial number
A Colt police positive special with that serial # was made around 1952.