Hi AG2012 -
I am a big fan of your immaculate recherches and always learn something new!
But "Ivanov" and his collection of initials, often without photos of the marks is in the true sense of the word "unbelivable" sometimes.
No word if Khromov worked in enamel at all, especially in champleveé.
Unfortunately the photoquality does not show the markmanship and the former quality of the mistreated spoon. Even the monogram is artfully executed.
I opt for Khlebnikov - it is his quality.