Destroyer badge tombak opinions & maker

[RICK S]

Hi
Your opinions and best guess on maker of this badge

[RICK S]

Destroyer badge

reverse

[RICK S]

Destroyer badge

catch & pin

[Tom Yanacek]

Very nice and original.
Best regards! Tom

[Tom Yanacek]

Oops, missed part of your question. Badge is quite possibly made by 'L/21' which is the LDO code for Förster & Barth. While the hardware is not typical for this manufacturer, there is a badge identical to your's in the Michael Tucker book that bears the 'L/21' code.
Best regards! Tom