There are no known variations of the medal, 670,000 were granted, of course, was produced in the "Mint of Leningrad"
There are four variants of the documents of assignment.
Var 1 - Brown document like the soviet Orders doc, issued only to honorary citizens, so very rare.
Var 2 - signed by the Governor V. A. Yakovlev
Var 3 - signed by Governor A. D. Beglov
Var 4 - signed by Governor Valentina Matviyenko
I show you my medal and documents Var Var 3 and 4
«В память 300-летия Санкт-Петербурга»
The first document Var 3
was Assigned to:
Киреев ...... Kireev
Евгений ...... Eugenij
Александрович ...... Alexandrovich
Awarded by:
Исполняющий обязанности ...... The Executive Manager
губернатора Саинт Петербурга ...... Governor of St. Petersburg
А. Д. Беглов ...... A. D. Beglov
The second document Var 4
was Assigned to:
Сердюков ...... Serdyukov
Александр ...... Alexander
Федорович ...... Fedorovich
Awarded by:
Губернатор Санкт Петербoурга ...... The Governor of St. Petersburg
Валентйна Ивaновна Матвиeнко ...... Valentina Ivanovna Matviyenko