History / Polish military uniforms - collar markings [74]

My aunt has the print in an oval frame that was removed from my Grandfather's home in the mid 1960's. She sent this copy of that from Florida. I believe that it is a photo that she has. It looks like a painting to me but I really have no idea. The colors on my copy are rather muted so that is what you see. Olive green and gold bars. It does not help that the background color blends with the color of the uniform. I have one picture of my great grandfather from the mid 1930's and he has similar features which leads me to believe it could be a brother or his uncle. Unfortunately we do not have very much to work with as far as oral history.

History / Polish military uniforms - collar markings [74]

Thank you so much for your assistance identifying his rank. Could you tell me what time period this would be? The only family information we have is "uncle". My great grandfather emigrated to the US in 1902 at age of 17 with his brother who was 15. This was found in my grandfathers effects with no other information.

History / Polish military uniforms - collar markings [74]

Trying again to upload

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History / Polish military uniforms - collar markings [74]

I'm trying to identify my relative from this photo. I am guessing Polish military but not sure of what time period, possibly WW1 or before. I would like to know more about age, rank, branch, and ultimately identity but I know that is a stretch. Last name Mach. Thanks!