Need Help ID'ing writing on E107 back's

[sb1]

I am hoping someone here can shed some light as to the writer of notations on the back of a pair of E107's, I used to have a few more with the same writing and fairly sure it was a prominent collector many decades back. Can anyone help?

[RCMcKenzie]

Scott, here's an n172 with Buck Barker's notations. I can't tell if it is the same hand writing. Rob

[sb1]

Thanks, it's not Buck Barker.

Also ruled out are Nagy, McPherson and Haber. Does anyone have an example of Orem's handwriting?