Hang on to the Cert card. Perhaps make an entry in the registry and offer it to anyone (in the description) trying to register their rig of the same VIN at some point in the future.... ?

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66 W200, 440/727, almost back together, restored!.
68 Galaxie 390
70 W200, 392, NV4500, d60f, d70r, hydraulic clutch, p/s, hydroboost, HD factory gauges
70 F250, 6BT, NV4500, d60f, d70r, hydraulic clutch, p/s, hydroboost, A/C
70 Olds Cutlass 455 Convertible, A/C, pw, discs, console
86 Jeep Comanche 4.0, auto, 4x4
91 Ford Ranger shop truck
99 Cadillac Seville
12 Jeep SRT8