[R-390] Identifying Collins 390a

[JMILLER1706 at cfl.rr.com]

Was watching the 390a videos yesterday and it was suggested that you could identify a true Collins 390a from the real panel (Collin has only one fuse), or from the front panel (the number "6" on all the control lettering is a slightly different font, and silkscreened letters), and by the COL serial number stamped on the modules.

I have what is supposed to be a Collins, but the front panel is engraved (letters punched in) and the funny looking 6 doesn't exist.  I sent the panel out for repainting couple years ago, it was yellowed with cigarette stains, etc.  Is it really true that Collins front panels are silk screened and all have this funny looking "6"?