[...] And I'd say otherwise; in fact, the eighties saw the introduction of grooved tiles, but not grooved jumper plates. Which made up for some pretty ugly sides on models [...] (75 months ago, Mar 21, 2018, to Inventories Requests)
That's a clear 'absolutely not'! I'd say grooved jumper plates were introduced sometime in the 80's. Jan. In Inventories Requests, el_gordo writes: [...] (75 months ago, Mar 21, 2018, to Inventories Requests)
Please make changes to the following inventory: (Set 4011-1) * Change 1 Part White {3794 Plate, Modified 1 x 2 with 1 Stud (Jumper) (Undetermined Type) to 3794a [...] (75 months ago, Mar 21, 2018, to Inventories Requests)
Please make changes to the following inventory: (Set 1979-1) * Change 4 Part White {3794 Plate, Modified 1 x 2 with 1 Stud (Jumper) (Undetermined Type) to 3794a [...] (75 months ago, Mar 21, 2018, to Inventories Requests)
Please make changes to the following inventory: (Set 6510-1) * Change 1 Part Light Gray {3794 Plate, Modified 1 x 2 with 1 Stud (Jumper) (Undetermined Type) to [...] (75 months ago, Mar 21, 2018, to Inventories Requests)
