Vacuum Chamber for What?

This is a vacuum chamber that I found in the original box, unfortunately I have no idea what type of car it is for.

Also, if anyone can tell me how to look up the part number for myself it would help as I have several other parts that I am going to have to look up.

Thank You Guys for All Your Help, -Jay Foster jfoster_sms@yahoo.com

* Edit to Previous Post *

One of the members pointed at the there is pencil writing on the box.

He is right and it says "54 and older Chevrolet", however I would still like to confirm that the part in the box is the part that matches the box. Also, how much older like 49 to 54 or 50 to 51.

Also, I have several other parts that need identification and if anyone can tell me how to do this by part number it would be of great help.

Finally, just an FYI these items will be sold on ebay - but if you do a completed auction search you will see that these items hardly sell and when they do sell it is for little money. I just figured if I found out what they are I could list them for someone who may be in need them.

Thanks, jfoster_sms@yahoo.com

You photo is of a typical distributor vacuum advance mechanism for pre-1955 Chevrolets. HOWEVER........ the part number for 1953-54 is different than the 1952 number. Both of those are different from the 1939-1951 part number.

I don't know for certain but I would suggest the unit is more for the 1939-51 vehicles because of the hard-tubing-style threaded coupler.

I think the later ones used a rubber tube over the nipple. Some 1952-54 Chevy person can probably answer that.

I have literally 3 to 4 boxes of stuff to go through and need all the help I can get the ones that are not clearly marked.

Thanks For Your Help, -Jay