Lew - here is the info from my database on DA.
The A/S Dansk Ammunitionsfabrik (Danish Ammunition Factory), located at Otterup Denmark operated from 1911-1980. This business was founded in 1911 by Norma in conjunction with the gunmaking company of Schultz and Larsen.
Schultz and Larsen had been in operation since 1904 and produced test barrels for Norma. In fact Niels Larsen was the president of the Dansk Ammunitionsfabrik plant for many years.
The A/S Dansk Ammunitionsfabrik in Otterup, Denmark evidently never made their own cases. They typically used reloaded cases or new cases made elsewhere, mostly from Norma in Åmotfors, Sweden.
The main types of ammunition produced were match rifle cartridges (for the shooting clubs), some hunting cartridges (mainly reloads using military cases eg 6.5x55 (SC64), 8x58R Krag (SC65), 8x57 Mauser (M32) and also cattle killer cartridges. Reloads of 6.5x55 and 8x57 carried out by A/S/ Dansk Ammunitionsfabrik used a circular mark overprinted on the headstamp, after WW2 1947-1949. Their seems to be some relationship between Hærens Laboratory and Dansk Ammunitionsfabrik - see pkt label.
They also produced the shortened case reloads of the 11.6x40R (SC38) for Greenland in the 1950’s and 60’s (see the packet at right) mostly loaded with Norma NP primers .
The company typically used a “DA” hs on new cases which are scarce and were produced by other companies as it is believed that DA never produced cases (RSACCA #213). They are also known to have used “D.A.” primers.
The company ceased operations in 1980.