This is a most interesting dialog on the relative value of Lugers and related accessories.
A point I would like to make is that comparing the value of a Luger to the value of a dollar (in this case) is somewhat meaningless. The reason, you ask? Well, what we are essentially discussing is the devaluation of the dollar over time in relation to everything.
The real question I believe is the relative valuation of Lugers over time as compared to other items/assets/investments, etc. Adjusting for inflation is just to provide a relative constant over time to determine the actual appreciated value of Lugers to the US Dollar (that is consistently losing value).
I like 4 Scale's comparison of Lugers to other collectibles. That is interesting and worthy of further discussion.
We all know that the volume or supply of Lugers is fixed or declining. Declining, as previously mentioned above, due to fire, loss, or other unrepairable damage. What we don't know and can only try to measure is the effective demand, as measured by dollars adjusted over time, or other alternative uses or expenditures of our dollars.