i have just purchased this stunning omega prestige case ref 168.1050, calibre 1109... = year 1986....please see photos, but it dosen't have the backplate.........it was missing... can anybody tell me, is there anyway of knowing, if its goldplate or 18ct gold...it weigh,s 34grams at the moment, without the backplate. there are no assay stamp marks, to the exterior of the case./.... many kind regards p

 

Please show inside of case back.

Is there a hallmark anywhere on the case?

Do you have any paperwork?

 

sorry, but there are no hallmarks, and no paper work.. thanks

 

Please show inside of case back - if you want help you need to help those who are trying to help you...

 

does the movement come out from the bottom, or through the bezel.. thanks

 

please see photos thanks

 

Please show inside of case back - if you want help you need to help those who are trying to help you...

 

Al,

I think you did not read an important part in the OP´s first description.

He stated that the "back plate" is missing.

 

hi, i,ve just noticed that the crown is 18ct gold, it has a couple of impress marks to the base of the crown. it looks like nf and cd thanks

 

CD is the material code for 14k yellow gold capped. BA and BB are the codes for 18k pale yellow and yellow gold respectively.

This watch should have hallmarks on the underside of the lugs to indicate solid gold...

 

thanks. as there are no hallmarks anywhere on the case. i would assume that its a gold capped omega case... it looks like , i,l be selling it . as i am unable to locate the back plate..........thanks re all your help, many regards peter

 

I have long been under the impression that Omega no longer produces watches in cases that are plated. Or PVD or CVD, for that matter. Of course, I have been known to occasionally be wrong. The subject watch appears to have a separate snap fit bezel, so no doubt, the case back would have been a snap fit as well. The inside of the case has been milled inside the lugs, which is often done on karat gold cases to save weight. I wouldn't be surprised if the case is karat gold! Especially considering it weighs more than one ounce Troy, without the case back!

 

thanks. you my of given a bit of hope... the guy that sold it me, said that he remember it with a gold coloured backplate.. so you could be right.. i will take it to the jewllers in the morning....... many thanks. regards peter..........ps, i will letyou know

 

Best bet is to get it tested. Without hallmarks you are just guessing...

 

In your photos, it appears there are rectangular hallmarks stamped into the inside surfaces of the lugs (vice the back surface which is more common). This looks like solid gold.