Hello,

Cal 12 has a chronograph hour register on the left hand side.
Cal 15 has running seconds instead slightly higher up.
I personally like the hour version due to symmetry.

: Hi all,

: I am interested in buying a Monza 110.501 or 150.501 but I got
: confused by the "economy" versions.
: I cannot see any difference between the normal version and the
: economy version, except that the latter has no frame around the
: date and "Monza" is missing on the dial.

: So my questions:

: - Is that really the only difference?
: - Is there a difference in value and rarety when it comes to these
: two versions?
: - Would you go for a cal. 11 or a cal. 15 Monza? Why so?
: - I noticed that also the 110.501 watches often have a 150.501 case
: back. Is that how it was sold?

: Thanks a lot for your help.