Vintage Tudor 7934 watch help!

[awesomise]

So...Yeah
I picked this one up a year ago from a second-hand shop nearby. Back then I didn't even know much about watch but I saw the rolex on the back and decided why not. And I paid AU$500 back then, no rolex strap/bracelet, only an aftermarket one.
I'm curious to know how much this watch worth on the market and what's the special engraving on the back? Does it make the watch more valuable?







Also, this is my grandmother's one, she's long gone but the watch remains here.

It's been abandoned ever since she left but I thought It's time to pick it back up.

And I'm not going to do a refinish. Might get a sapphire glass though.

[harry in montreal]

The Tudor is worth a little more than you paid. Does she keep time ?

[awesomise]

Originally Posted by harry in montreal

The Tudor is worth a little more than you paid. Does she keep time ?

Yeah, I never serviced this one but it keeps time well, about 4 secs off a day.