scuttle-butt has it that a good way to invest in gold is to buy the swiss franc. it is backed by gold (unlike the US dollar) and is much more liquid than buying gold coins or bars.
but will the francs price move with the price of gold? have you ever heard of such a thing?
The swiss franc used to be required to be backed by at least 40% gold reserves. That is no longer the case as of a few years ago.
If you will look at chart for gold and look at a chart for the swiss france you will see that the correlation is very rough. About the only connection that you could make is that if the dollar is weak the swiss franc will likely be strong in terms of dollars. Also, if the dollar is weak then gold is likely to be strong.
To trade the swiss franc you pretty much have to go to the futures market or the FOREX market and that is more liquid than the bars or coins. But it is not more liquid than gold futures. So you might as well trade gold futures as a play on gold rather than swiss franc futures.