Seiko C153-5007 (Calculator) for $187 for sale from a Private Seller on Chrono24
Vintage Seiko Calculator Digital Type C153-5007 Mens Watch i | Estate Jewelers | Toledo, OH
birthyearwatches.com - 1977 Seiko C153-5009 Calculator watch. Can you see what I did there? #seikolover #seikocollector #seiko #1977 #birthyearwatch | Facebook
Seiko C153-5007 02 | A nice calculator watch from Seiko. Alm… | Flickr