I have four full-score works of Borodin in miniature score. Here are the specs:
- Symphony No. 1. Kalmus miniature orchestra scores No. 45. No copyright. Looks like 19th c. engraving.
Symphony No. 3. Zurich/London. Edition Eulenburg No. 501. Copyright by M.P. Belaieff, Leipzig/Bonn, n.d. Plate E.E. 6322. "Eigentum von M.P. Belaieff, Leipzig-Bonn, mit dessen genehmigung in Eulenburg's Taschenpartituren-Ausgaben aufgenommen." Looks like 19th c. engraving. (Includes introductory notes by David Lloyd-Jones, Oct. 1962.)
Prince Igor. Overture. Zurich/London. Edition Eulenburg No. 1118. "Copyright M.P. Belaiev, Paris and printed here by permission," n.d. Foreword copyright 1950. Plate EE 6630. Might be a newer engraving than original might have been (thinner, crisper lines).
Finale from Mlada. M.P. Belaieff, Frankfurt. Nr. 374. Plate 439. (c) 1972 by Belaieff. Cover, t.p. and 1st page captions of score in German. From plate no. and engraving style, this must be 19th-c.