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Bobblehead - Strength is a miscellaneous item in Fallout 3, a Vault Boy bobblehead. It permanently improves the Lone Wanderer's Strength by 1, to a maximum of 10.
The bobblehead is found in Lucas Simms' house in Megaton, on a desk in the bedroom (door to immediate left at top of stairs) on the second floor.
If Megaton is destroyed during The Power of the Atom, this item will be unobtainable.
The bobblehead in Simms' house
Collectable Strength bobblehead available from the Bethesda store.