I've been keeping a list of the times Compo's Matchbox appeared, like I did with the list of names the natives had for Foggy. I've started my viewing of Series 19. Here is what I have so far, with the exception of whether it appeared in "Barry's Christmas" I haven't viewed that episode yet (waiting for Christmas day to watch it like I did "What Santa Brought for Nora".
Episodes with Compo's Matchbox
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Isometrics and After - (Foggy)
Flower Power Cut - (Foggy)
Whoops - (Ivy)
Car and Garter - (Wesley)
Serenade for Tight Jeans and Metal Detector - (Nora, Clegg)
The Three Astaires - (Lydia the vicar's wife)
Getting Sam Home - (Clegg)
The Mysterious Feet of Nora Batty - (Female bar patron, Clegg)
Uncle of the Bride - (Looking at it himself during the wedding till Seymour nudges him from behind)
Big Day at Dream Acres - (Female bar patron)
The Experiment - (Nora)
The Kiss and Mavis Poskitt - (Female bar patron)
Das (Welly) Boot - (Female bar patron)
Ordeal by Trousers (Different matchbox with beetle - Foggy, Clegg)
Have You Got A Light Mate - (Customer in Cafe)
The Dewhursts of Ogleby Hall - (Customers in Co-Op)
A Leg Up for Christmas - (Female bar patron)
Episodes with Compo's Matchbox
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Isometrics and After - (Foggy)
Flower Power Cut - (Foggy)
Whoops - (Ivy)
Car and Garter - (Wesley)
Serenade for Tight Jeans and Metal Detector - (Nora, Clegg)
The Three Astaires - (Lydia the vicar's wife)
Getting Sam Home - (Clegg)
The Mysterious Feet of Nora Batty - (Female bar patron, Clegg)
Uncle of the Bride - (Looking at it himself during the wedding till Seymour nudges him from behind)
Big Day at Dream Acres - (Female bar patron)
The Experiment - (Nora)
The Kiss and Mavis Poskitt - (Female bar patron)
Das (Welly) Boot - (Female bar patron)
Ordeal by Trousers (Different matchbox with beetle - Foggy, Clegg)
Have You Got A Light Mate - (Customer in Cafe)
The Dewhursts of Ogleby Hall - (Customers in Co-Op)
A Leg Up for Christmas - (Female bar patron)