Amazon.com : Canon Disc. Speedlite 420EX TTL-Shoe Mount Flash with Case - International Version (No Warranty) : On Camera Shoe Mount Flashes : Electronics
Canon speedlite 420EX → Hard to Find
Canon 420EX Speedlite Flash, tested, works great – RecycledPhoto
Canon Speedlite 420EX flash unit for EOS D models - OPEN BOX | eBay
Canon Speedlite 420EX Shoe Mount Flash for Canon for sale online | eBay
Canon Speedlite 420EX E-TTL Flash Review
Canon Speedlite 420EX Flash for Canon EOS SLR Cameras | eBay