Gherardo Bonini confirmed that the correct name is Preciso Merlo so the record for Merlo Preciso needs to be combined.
I suggest some sort of "referral" under Merlo Preciso to the correct name since many records use that name.
Preciso Merlo born in Hospï, Germany, 16 December 1910.
Finally, the following were bouts for Merlo that Gherado has, but lacked first names or other details --
Van Tongelen (NL, 22 september 1928),
Bonardi (IT, 27 June 1929),
Roueri (IT or FR ??, 14 october 1929),
Alonzo (ESP, 15 feb 1930, 5 July 1931),
Tassi (IT, 16 march 1931),
Van Colillis (BELGIUM, not sure the spelling, 18 June 1930),
Van Collier (NL, 27 June 1930),
Westenraed (16 July 1930, 5 september 1931),
Logan (ESP, 2 March and 16 May 1931 in Barcelona),
Martinez de Alfara (ESP, 18 July 1931),
Andersson (SWE, Paris 10 may and 14 June 1931, 25 Jul & 15 Oct 1932),
Delleau (FR, 26 march 1934),
Lenglet (FR, 17 may 1934),
Lauriot (FR, 29 november 1934),
Labrize (FR, 11 january 1935),
Spakow (FR, not sure the spelling, 22 february 1935),
Zeeman (USA, 14 may 1936).