I have what are supposedly 1968-1971(mostly 1969 & 1970) Washington Senators pants only

, powder blue and the off white. They are in pretty rough shape, I believe they came when the Senators moved to Texas and may have been used at one time(practice??) by the Rangers after the move and then made their way into the public, How I don't know. There are about 12 pairs of each, most with the sizes stitched and names either written or numbers stitched(or both).
Can anyone tell me if these are in fact the real deal and if they have any value, especially given the condition, basically worn out, with many repairs, probably while in MLB use and later.
I can add more scans if needed.
Scott