![This was my grandfather's seiko chronograph "Jumbo" [6138-3002]. Still working fine after about 50 years. : r/Seiko This was my grandfather's seiko chronograph "Jumbo" [6138-3002]. Still working fine after about 50 years. : r/Seiko](https://i.redd.it/6xkqsk6rbcna1.jpg)
This was my grandfather's seiko chronograph "Jumbo" [6138-3002]. Still working fine after about 50 years. : r/Seiko
![NOS SEIKO JUMBO Vintage automatic chronograph watch Ref. 6138-3002 Cal. 6138 + BOX *** NEW OLD STOCK *** Seiko Vintage watches - Watches83 NOS SEIKO JUMBO Vintage automatic chronograph watch Ref. 6138-3002 Cal. 6138 + BOX *** NEW OLD STOCK *** Seiko Vintage watches - Watches83](https://watches83.com/56644-thickbox_default/nos-seiko-jumbo-vintage-automatic-chronograph-watch-ref-6138-3002-cal-6138-box-new-old-stock-.jpg)
NOS SEIKO JUMBO Vintage automatic chronograph watch Ref. 6138-3002 Cal. 6138 + BOX *** NEW OLD STOCK *** Seiko Vintage watches - Watches83
![NOS SEIKO JUMBO Vintage automatic chronograph watch Ref. 6138-3002 Cal. 6138 + BOX *** NEW OLD STOCK *** Seiko Vintage watches - Watches83 NOS SEIKO JUMBO Vintage automatic chronograph watch Ref. 6138-3002 Cal. 6138 + BOX *** NEW OLD STOCK *** Seiko Vintage watches - Watches83](https://watches83.com/56634-thickbox_default/nos-seiko-jumbo-vintage-automatic-chronograph-watch-ref-6138-3002-cal-6138-box-new-old-stock-.jpg)