Simply means 'special steel' in French.
$350-$850
50-250 usd
Please re-ask the question and provide the model and guage or type of gun. "Acier Special" means special steel and is stamped on many different models.
1932
Basically impossible to value with no other information.
Acier special means Special steel, and barrels marked this way are only on FN sales guns, not Browning. FN produced the guns for sale outside the US and were not imported to be sold by the Browning Co. The FN version is mechanically the same as the Browning version, but markings and finish may be different.
You need to give more information. I assume it is a shotgun, but "Acier Special" just means it was made with "special steel" and we would need at least a model number to start looking for the manufacture date.
The 5G prefix to the serial number indicates that your browning was made by FN of Belguim for browning in 1965.
50-500 usd
50-500 usd
Try the Gun Parts Corp Hurley NY http://www.e-gunparts.com/
This was a light made gun but very desirable to any collector. This weapon was manufactured in 1969 by Browning.