Agree Del,
I've heard mention that the fully spelled out MARLIN I cut stocks were pretty rare, maybe as few as 17,000~. But have no proof. Examples have been seen with both the big box UEF over GHD and the rectangular boxed G.H.D. over U.E.F with CC all in the box.
Same link as above showing the fully spelled out MARLIN has the Rectangular (Later) Cartouche/CC.
https://www.milsurps.com/showthread.php?t=34535
https://www.milsurps.com/images/impo...dMarlin2-1.jpg
Would appear the early I cut stock was pulled out of the stack and assembled and accepted at the time the stamp currently being used would have been the Rectangular.
This picture shows a Robert Irwin worker fitting a stock. All depends on which stock is grabbed next ?
https://www.milsurps.com/images/impo...9/03/001-1.jpg