Washington Dollars rotating?

Anybody had problems with GW dollars rotating in the PCGS holders during shipping? I've shipped hundreds and haven't heard anything back (except positive feedback) until yesterday. One buyer called me and said 6 of 6 rotated in transit. Previously he had purchased 12 and none of them rotated. Both were shipping the same way in the same re-used mint box.
Anybody had luck with the tapping to rerotate and straighten method?
Thanks,
--Jerry
Anybody had luck with the tapping to rerotate and straighten method?
Thanks,
--Jerry
0
Comments
Tom
San Diego, CA
Perhaps that shipment with six rotated coins got on a truck with a lot of vibration or something. Hard to figure. The coins will rotate, probably a bit more than other coins because of the see-through edge holder.