Duncan Invader SH-8B with a weird serial number stamped

[Tuismond]

Hi,

have anyone seen Duncan Invader with a serial number (or something) stamped on the base plate? I recently bought this pickup from private seller here in Finland. I've never seen one before. I contacted Duncan customer service and I was informed that according to the numbers in the sticker this pickup was made in 2017.

[Masta' C]

Looks like the manufacturer of whatever guitar that pickup originally came in serialized the pickup. Maybe it was a limited-run guitar or something. I doubt it came from SD that way and the fact that the pickup was clearly made in 2017 and the serial has a 2018 date suggests it was serialized post-production and didn't come from the factory this way.