The Seiko 8420-7319 is a watch model based on the 8420 movement.
Parts List
| RE3N70SN00 | crystal |
| 25M10NA1 | crown |
| 0G1800N02 | case back gasket |
| BJJ29G | band - leather band |
| KJA05G | band - leather band |
| WJJ08G | band - leather band |
| 05V10AGH | hand - hour hand |
| 05V10CGM | hand - minute hand |
| A130AS | others - push pin (for lb) |
| 82713080 | others - case ring |
| 84202070XG18 | others - dial |
| 84207 | others - machine code |
| 8420731925 | others - case |
| 0354815 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| DZ0041B01 | others - crown and stem gasket |
Caliber 8420
