I have a Heuer Rally-Master that I bought new in 1964.

I only used it twice, then put it away. I recently came across it while cleaning out some older boxes I had stored away.

It is reasonably clean, with minor scratches on the dials (Master-Timer and Monte Carlo on Heuer backing plate) and some slight discoloration on the hands and dials. Neither timepiece is operating. There is no rust, and the set has never been near water. I assume that the original lubricant has become gummy over time.

I have been getting some quotes to have the pieces cleaned and lubricated, and restored to operating condition.

There is no sentimental value to me. It is strictly a financial transaction, and I would like to realize the most return on the sale.

I need advice as to whether I should sell the set "as is", or invest in the cleaning and servicing to restore it to operating condition. I have been unable to find any recent sales information on this specific item, so I do not have a good idea of the sales value of an operating Rally-Master set.