I have owned several speedmasters in the past but very far removed from being an expert in them and hoping someone could assist me with some basic questions. The dial is a very even colored chocolate brown. Because of the consistency of the color It appears to me it came this way from the factory. My question is did Omega ship some of the speedmasters out with this color dial or did they change color through the years (as described by AQ in their Omegamania auction)?
The watch came with an Omega bracelet as show in the pictures and the end pieces are stamped with "510", is this the correct bracelet for this era watch? The papers state it was sold in 1970 by "Bailey Banks and Biddle" but was made in 1969.
I bought it with original papers(International Guarantee"), several small brochures on how to operate the chronograph and care and care for it plus what I assume to be the original inner (silver color) and outer box. If the bracelet is not correct I would like to find the correct one to put on it so any assistance would be greatly appreciated.
Thank You
John








I believe both are strong possibilities. Nilomis has a very good point when he brought up the consistency of the color. I can see a scenario where some dials came into Omega with the incorrect color and they got used, for whatever reason.
It's hard for me to visualize how this could happen it this was attributed to exposure of the sun. But with that said "steelerfan" point with the rolex 16550's is a very strong argument that it evolved over time and with assistance from the sun.
I think this makes it all the more interesting, searching for answers and getting a greater knowledge base.
Does anyone have any ideas as to the originality of the bracelet? It appears to be genuine Omega with 2 links on each side of the buckle are expansion links making a very nice comfortable fit. It is marked "No 13" inscribed in a circle and also marked "4 over 69". Can I assume that this stands for April 1969 which would be the date of manufacture?
Thank you for sharing your knowledge its greatly appreciated
john