JDW:
Thanks for the effort. I'm not sure of the source of the "Crown" over "LC" or the "V" in a circle, which conjures up foreign tube proof but only due to the fact that Austria had a similar stamp with a "F" in the circle and I haven't seen any info that suggests such in Belgian proof info. I guess "PJ" to have been a mechanic?

Kind Regards,

Raimey
rse