maybe it did in 1925 but i didnt notice any condo there in 1967
& none is indicated on the latest cia & national geographic maps
but only a clean international border running right thru the lake
nor does the following reliable source hedge about it at all
http://web.nps.navy.mil/~relooney/Caspian_28.htm

the bolivia peru ibs number is conspicuously missing tho
& such an omission sometimes means the situation is unclear

--- In BoundaryPoint@yahoogroups.com, "L. A. Nadybal"
<lnadybal@c...> wrote:

> I just came across this. Anybody know if this information is still
> current (does the condo continue to exist?):
>
> The Peru Border with Bolivia
>
> This border was defined by the Polo-Bustamante treaty of 1909

and a

> Protocol signed in 1925; a condominium over Lake Titicaca

was also

> established. At the time of the 1929 treaty between Peru and

Chile,

> Tacna was returned to Peru on the understanding that its

boundaries

> would be the same as those laid down in the treaty which

Bolivia had

> signed with Chile in 1904. Bolivia subsequently questioned

the

> legitimacy of Tacna's boundaries and came to view that part of

the

> border as a de facto arrangement, which, for that matter, has

since

> remained unchanged. Both countries refer to the area between
> Mauripalca and Jalaropampa as "Section IV of the Southern

Border".

>
> Thanks
>
> LN