Authentic replacements with wax pots to reduce feedback.
The Seymour Duncan Antiquity II Twang for Tele hark back to the mid '60s. The tone and look are faithful, but they are wax potted to reduce unwanted feedback when using high powered amps and effects.
To some, this is craziness, intentionally creating an aged electrical component. But if you're like Seymour Duncan, and you appreciate the personal commitment and hand craftsmanship found in early electric guitars, then you'll want to capture that timeless beauty with an Antiquity pickup.