Similar look and location to 1MM-029 & 1MM-043. You should try matching markers to those before sending in.
Best Find - 1976 D WQ DDO-001 http://goccf.com/t/382777
Interesting find - 1947 S over inverted S http://goccf.com/t/368005
Interesting find - 1947 S over inverted S http://goccf.com/t/368005