The neck-butt stamp will provide year/week/day or year/week. The year is a big thing to some for parts and is the seller telling the truth. To find the year of my Strat you need to pull off the neck. Gfs sells them in the proper range for each place Neck, Middle and Bridge. Yes, I agree it is good to keep track of the guitar parts. I will end up with two types of Telecasters and two types of Stratocasters.
This neck/butt year/week date-code should be close the several guitar body pards to tie both together as one original guitar. Now you get in to vintage stuff and I pull out the stops. I put a hand made sticker with the Y/M/D and my name. But, I have purchased 110( ) 1950s & 1960s Jensen Speakers and I wish to have special non-normal cabinets built.
- Vintage USA Big Muffs have single-gang linear taper 24mm 100k potentiomers.
Electro-Harmonix used pots from various makers, but they were usually the 24mm size, with 1/4" knob posts.
Open the new pot this same way and install the old shaft. Something to keep in mind, some pots are letter coded with A and B to represent linear or logarithmic, but there is no worldwide standard for which is which. No part of this work may be reproduced, stored in a retrieval system, or transmitted in any other form, or by any means, electronic, mechanical, photocopying, recording, computer networking, or otherwise without prior permission in writing from the copyright holder(s).
In general, the USA standard, which I believe came from Japan, is A=log and B= linear.
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If the code does not fit the above criteria, don’t force it and skew your dating results.
- All vintage USA Big Muffs have source-date codes stamped on the underside of the potentiometer cans, or “pots”.
The next two numbers after the manufacturer number are the year, and the last two numbers are the week of the year the pots were made.
So a pot stamped 1377833 is a CTS pot made in the 33rd week of 1978.
Note that this does not mean a Muff with a 1978 pot was actually made in 1978, it just means it was not made much earlier than 1978.