Need Seymour Duncan pick up ID/verification please.

[SirJackdeFuzz II]

I have this 59 . I'm not able to date it. I've always thought the L at the end was the initial of Lydia Daniel (if I'm not wrong) aka the winder of this particular pickup (I have a bridge 59 with the J too). This story about the Leesona machine makes this pickup more interesting to me.

Thank you very much EmiAba