ST 105.003 ED WHITE Dial Question

I own a Speedmaster ST105.003 serial number 25008349 which I believe was made in the 1964-67 period. Everything seems correct. Case has straight lugs and no crown guard. Bezel is dot over 90. Caseback is signed 105.003 HF. Dial has the applied Omega logo, and the hesalite cryatal has the etched logo. The only thing is that it has the word PROFESSIONAL under the word Speedmaster. I have heard different theories about this. One is that Omega was making both type of dials during that time and that the dial might, in fact, be original to the watch . Another is that the dial was replaced during a factory service that occurred sometime before Omega replaced the applied logo with the painted one. According to the Omegawatches.com site, the 105.003 was produced between 1963-69. This overlaps the production dates of the 105.0012 (1963), 145.0012 (1966), 145.0022 (1968). Most of the ED WHITE speedys that you see have the dial without the word PROFESSIONAL, but I am wondering if the dial on my watch could be authentic?

Thank you.

Nevermind, not good info. Forget I said anything.

hi there,

all 105.003's should have a non-pro dial.

http://speedmaster101.com/105-003/

that's also an interesting caseback.

@gemini4 , ever see a caseback like that? notably the inside ref stamp?

My guess ths is a 145.012 with wrong caseback.

Any theories for the case back origins?

I appreciate everyone's input, especially as this is my first post on this site. This is what I've gathered so far.

I don't think that it could be a 145.012, because of the case (straight lugs, no crown guard). The serial number is appropriate for a 1965 105.003 and the caseback seems to conform to the 105.003 (Straight lugs, 19mm, double step with speedmaster engraved on rear).
(http://speedmaster101.com/105-003/). The dial/hands are correct for the 1967 145.012-67 (http://speedmaster101.com/145-012/).

So, I am stumped! The case says it must be a 105.003, but the dial and hands say 145.012. Serial number could be either a 1965 105.003 or a 1967 145.012. Any further thoughts?

Also, the inside caseback is stamped 105.003, without the ST or the year. I don't know the meaning of that. Thanks again.

I think it means it's not original. someone must have restamped it at a later time.

as David says, nice watch for wearing, as long as you don't sell. if you're selling, well, it's got quite the few issues that are of concern - none of which should affect the function of the watch, just the value / desirability.

wish there was better news...