For the "standard" NEW Model (with transfer bar safety) Blackhawk in .357 Mag, current retail values range from around $200 in fair condition to around $480 in Excellent condition. If New In Box - $500 to $550. Be advised that there are a couple variations that can bring more value.
You will have to call Browning with the serial number.
A handgun.
Magnum
On the butt
OLD!
Check on the butt.
Impossible to answer without the serial number.
Feb.1984 with the serial number that you have provided.
If you mean serial number 27,078,977;then it was made in 1973.
Your serial number indicates that it was made in the year 1973.
The model 2200 Magnum with serial number 980000400 was manufactured in 1998. The first two digits of the serial number typically indicate the year of production, so in this case, "98" corresponds to 1998.
About 1968/1969.