My 1929 633 7 Passenger Sedan has a single sidemount on the left hand side only, and a trunk rack. That is how the car was built, it is also right hand drive and sold new in Australia that way. I think the car looks better from the RHS without the sidemount.
I wonder how many single sidemounts were made?

Dave,
The spare wheel locks were originally pot metal and may therefore have swollen and be unuseable. If this is the case you can drill them out and buy new ones. I bought mine from Henry Yeska many years ago and they are available from other sources and fit a number of different cars.
The ignition switch may also be pot metal, I don't know, mine was missing completely so I fitted a new ignition switch.
Hopefully a locksmith can fix yours.

If you are still looking for a new vacuum tank top they are avaialable from Vintage & Classic Reproductions:

http://www.vintageandclassicreproductions.com/

65ZR1,
I would at least drop the oil pan and clean it and everything else you can get at while its off. These cars have no oil filter apart from course gauze around the water pump. I would also remove the engine side plate to clean out the water ways around the block, which will probably result in the need to fit thread inserts in the small UNF bolts that attach the side cover. The side cover has a water distribution plate inside to equalise the flow along the block. This typically rusts away. Details of a replacement are available if you need them. Then the fuel system will probably need cleaning out. Distributer points and spark plugs need checking.
If it does not start try lightly flooding the carburetor and pushing the choke in most of the way.
Now its possible given the history of the car that it was restored then placed in Harrah's museum in which case it could be pristine inside but I would check it before trying to start it.
Take your time, this car is worth preserving. Keep us informed of progress and ask for help if you need it.

I stand corrected, I agree its an eight but not because the bodies in the 2 photos are the same - the bodies on the eights and sixes are identical from the bulkhead or scuttle back, the difference in each case is a 10" longer hood on the eight. The hood latches are eight cylinder, the hood latches for the sixes are a little different. I missed that initially.
I will go a little further and say is a 136" wheelbase because there is a small extra top iron brace on the 143" models, this car does not have that brace. As to whether its a 136 or a 236, I can't say.

Bear in mind that the bodies for the sixes and eights are identical from the firewall or scuttle back, however I stand corrected there is one detail that I missed that confirms it is an eight, it is the the hood latches. It is possibel to see the hood latches and they are from the eight cylindere models, the sixes are slightly different.

I cant think of any feature that would distinguish it from a First or Second Series eight nor could I tell if its the 136"or 143" wheelbase.

The six cyl has 28 hood louvres, the eigth has about 38 but the photo is not clear enough to count. The other pointer is the head lights, all of the eights had drum head lights, the First and Second Series sixes had the Packard radiator shape on the headlight rims. The original of the photo may be clear enough to show this if you can enlarge it.
Also the tire size looks a bit narrow for the eight but looks right for the six.
I still think its a Second Series six.

It appears to be a 6 cylinder 5 passenger 126" wheelbase from 1922 (First Series) to 1927 (Fourth Series) which all had that fender shape.

Narrowing it down, the tail light is not correct for First Series and from Third Series on it incorporated the word "Stop" so that points to Second Series.
The wheels appear to be 33" x 4.5" which is correct for Second Series and discs were optional for that model.
The headlights would confirm the model, if they have the Packard radiator shape on the rims then that feature was confined to First and Second Seies, round drum types were used for the Third and Fourth Series. The photo is not clear enough to distinguish this feature
The rear mounted spare is normal for all of these models.
The car does not appear to be long enoung to be a 7 passenger or any of the larger eight cylinder models.

My guess is its a 1924 Second Series 226 5 passenger 6 cylinder Touring or Phaeton.

FYI the speedometer / clock in the photograph suits First and Second Series 6 cylinder Packards from 1922 to 1924 models 126 /133, 226 / 233

Tom, some years ago when looking for tires for my 633 I found a 700 : 20 tire was too wide to fit into the spare wheel well in the fender. I don't recall the brand, but its worth checking the width of the well against the tire you choose.