These cowboy boots were more than likely custom made in the 60's. They feature a stove pipe top, five rows of stitching and a white overlay at the collar. They're in great shape and totally wearable with exception of one small hole along the side which shouldn't affect the wearability (see the last picture). Soles are good and the patina is amazing.
I actually think these were made by the famous M. L. Leddy's Boots Co. in Texas by the stitch line on the side of the vamp, but the inside label is missing, so there is no way to be 100% sure.