My new 1st class

[gregM]

Interesting cross, Trevor

[Dansson]

Trevor, that's a really interesting and nice cross!
1st came the steel core mandate, then for the vaulting and last for the screwbacks?
Do you know when the ban for screwbacks came to power?
Because many LDO pieces can be found with SB but I havn't seen them marked with a PKZ number if I remember correctly, logically I would say before late 1942 or early 1943 but did LDO have an exception on this? Because it is not hard to find a SB cross with an LDO marking