My 2p worth..
Putting the dial to one side for a second. The hands are completely wrong. Look at them, they are way too short.. There is no crystal gasket seal. This watch has been worked on heavily. How did the original hands disappear, along with the gasket.

Heuer would not have done this, an independent watchmaker somewhere has sourced & fitted the incorrect hands. If the watch was in a bad way - bad enough for the hands to need replacing, then there is no way on earth that is the original dial.. it is pristine.

It doesn't add up.

Add to this these catalogue pages from JAPAN, the Monacos listed here don't differ from the standard Monacos sold elsewhere in the world.

Japanese Catalogue 1970: http://nakahiro.parfait.ne.jp/catarog1970/moji/heuer1970.html
Japanese Catalogue 1972: http://nakahiro.parfait.ne.jp/catarog/moji/heuer.html

Cheers
Stewart

: Hi David, I need to give you my input on this matter... I have been
: in buisness now for almost forty years and do not have any
: dissatisfied clients or customers. This watch was given to me by
: a good client who purchased the watch in Japan when it was new
: and gave this to me along with many other watches mostly Omega's
: that we have sold on his behalf, many of them were very
: collectible models and all seemed to be 100% . I have no reason
: to doubt your expertise on this dial matter , on the other hand
: my client is a very honest person.
: There seems to be a lot of interest in watch from buyers who
: understand the watch and it will go for fair market value
: whether they believe it is a redone dial or not

: Regards .. Maurice