Harley Frame identity XE-35 with Die mark 10

[ricsta127]

hello, I have a Harley frame that I need some help identifying. It appears to be late 45 early 46 knuckle, It has a die mark with number 10 that I cant seem to find any information for.
Attached are pics. Any input would be appreciated

[Rubone]

That frame is a Bulneck which did not start until partway through the '46 model year, #10 would be the first version of that type frame. Mid to late '46.

[DANPATCH]

Rubone is correct. #10 is the first Bull neck.At the time of publishing i don't think Bruce had any examples. I sent him pictures of all the cast numbers on one .