Parker Vulcan

[John Boyce]

I am new to Parker shotguns so please forgive me if the following questions seem stupid. I came across a Parker 12 with vulcan engraved on the barrels and Parker Bros engraved on the box. What does Vulcan stand for and is there any way of finding out the grade of the gun from the term? The gun is very far away so I do not have access to taking it apart, etc. Assuming the grade can be determined from the term Vulcan, assuming good condition, what is a ball-park value of such a gun? Another indivdual told me that they thought it was a VH grade or similiar.

Thanks in advance.