Santiago Matamoros stamp on Compostela?

[Bradypus]

I have just emptied my house and put everything into storage while major building work is done. In the process I discovered my credencial, diary and Compostela from my 1990 Camino which I thought I had lost for good years ago. I've just noticed a curious detail on the Compostela. The cathedral stamp in the bottom-left corner is an image of Santiago Matamoros. Searching online I find that almost all photos of the old-style sepia Compostela have a stamp with the same line drawing of an altar that appears on the current Compostela. A very understandable change given modern sensibilities. But I'm wondering when the switch was made. Anyone know when that happened?

 

[NorthernLight]

My 2013 Compostella does not have Santiago Matamoros on it. The stamp appears to be Santiago’s casket.

This is the first time I’ve looked at the 2013 Compostella in a decade; it is a lighter-weight paper than my later editions and has the same monochromatic reddish/sepia-ish coloured ink as yours. I think I like it better than the more colourful later versions.

 

[JabbaPapa]

Anyone know when that happened?

My 1993 Compostela has the Matamoros but my 1994 one does not.

 

[Bradypus]

My 1993 Compostela has the Matamoros but my 1994 one does not.

That narrows the field very well! Thank you.

 

[grayland]

Very interesting..
It is interesting to discover the changes over the years.

I just noticed that an early one of mine from 2009 does not have a siglnature block for a Cathedral official.