Help identifing power transformer

[jherman]

While looking over my 66 Super Reverb for an overhaul I noticed the PT didn't look right. Cloth covered wires. So I checked the numbers against a chart I found online. None of them matched.
I googled the numbers and only came up with somebody looking at a tweed Bassman that had an original output trans but this power trans.
So here are the numbers- KO22798 606 0673 CSA 827
Many thanks.

[Old Tele man]

re: EIA manufacturers date-code: 606 0673

606 indicates it is a Schumacher-Woodworth made xfmer, so it's correct.

73 is probably "23" and indicates it was made during 23rd week of the year (remember only 52 wks in a year).

06 indicates any of the years: 1956, 1966, 1976 or 1986.

...however, the partnumber K022798 eliminates the Leo Fender years 1956 and 1966 when the partnumber would've been 125P5D.

...022798 is a CBS/Fender ('65-'85) or FMIC ('85-present) partnumber, which means it's a replacement PT from the years 1976 or 1986.

[jherman]

Thanks for your reply. I checked it again this morning and it is stamped 606 0673. That's why the month codes didn't make sense to me. Also the use of the cloth covered wire. It seems like a later transformer would have plastic coated wire, like the original right?
Maybe it was made during the 73rd month, that would account for any abnormalities:crazy

[Old Tele man]

quoting from the EIA Standard: Date Code Marking, EIA-476-B, dated July 1998:

"2. REQUIREMENTS

2.1 Date Code

The date code shall be a four-digit number consisting of the last two digits of the year followed by an additional two digits corresponding to the week of the year, in accordance with MIL-STD-1285 Date Code. (Example: Date Code 8632 denotes component parts or equipment manufactured during the 32nd week of 1986.)

2.2 Marking

The combined source and date code shall be marked on a component or equipment in a uniform manner with the source code number preceding the date code, separated by a dash; for example: 113-9610. This example identifies the manufacturer as the organization having been assigned source code 113 and the component as having been manufactured in the 10th week of the calendar year 1996." (color emphasis mine)

...and, from page 6 of MIL-STD-1285 document dated 15 October 1969:

"5.2.5 Source code. Unless otherwise specified...the source code shall identify the manufacturer and plant of manufacture of the part, and shall be the five-digit number assigned in Cataloging Handbook H 4-1."

"5.2.6 Date code. A four-digit number shall identify the date of the production lot or inspection lot, as applicable, and shall be in accordance with the following:
(a) Year - The first two digits shall correspond to the last two digits of the calendar year.
(b) Week - The last two digits shall indicate the week of the calendar year. If only one number is required to indicate the week, it shall be preceeded by a zero. The first week shall be considered the week in which the first Thursday of the year falls."

[donnyjaguar]

I've seen WWYY used on various electronics. That would make it the 6th week of 1973. What's the CSA in there for, Canadian Standards Association?

[Old Tele man]

...yep, that's my understanding.

[brad347]

mabe the person stamping the endbells was drunk that day

:crazy
:BEER

[Old Tele man]

...my guess this makes more sense, especially with the cloth covering:

yr = 67
wk = 03

...but, it's only a guess on my part.

[jherman]

I just noticed I typed month instead of week. Duh.Thanks for the date code info Tele man. That DRY heat's been fairly moist lately no?

[Old Tele man]

...and the Mother Nature said: "...yes, but it's a DRY rain!"