NEW PARKER OWNER IN NEED OF HELP !

[Aristeidis Tsesmelis]

Dear Friend's

My name is Aristeidis Tsesmelis and i am from Greece....first of all let me apologize about my very poor english . I will try to explain
you my problem as good as i can.....

I do own a parker double barel gun that is in my family since the late 60' and i would like to have a full picture about its identification.....
Trying the identification link on parkerguns.org i still have a small problem understanding the grade of my weapon.....


The s.number is 72485 so i know that the making date was at 1876 .I got the date from the identification link , even if the gun itself says it was made at MAR 15 1875

On the guns barrel rip u can read the following PARKER BROTHER MAKERS.MERIDEN.CONN.PARKER SPECIAL STEELL , so from the identification link i can see that the barrel
type is the PARKER SPECIAL

On the barrel the FRAME SIZE BY GAUGE is marked with a '1' so i can understand that the gauge use is 12,16.20

My main problem is the HAMMERLESS BARREL TYPE BY PARKER GRADE......on the idefication link there is a example of one of the guns simular to the one i own ..the gun on the
picture dose have marked on its watertable the following


V
146217

I understand tha the V makes the gun a PARKER VH VULCAN STEEL and its serial number is 146217,the only diffrence with my gun is that above the serial number there is on more number ...so at my own weapon u can see on the watertable the following


3
72485
D
MAR 15 1875

Dose this make my weapon a PARKER DH - GRADE 3 TITANIC STEEL and is it a rare type or a more offten ?
The gun is still in use by my father and in a extremly good shape , also having ejectors...

I am sure u get a lot of questions every day but still it would be nice if u could give me some help with my question if u find the time !