this was on a door here in the desert ? made in England ,broken key in the lock part,i removed and made key. Does not look that old,the pin holes on top have a shim between plug and housing ? could not find the door frame part. the bolt is rather large 5/8 thick 1 5/8 wide and 1 1/8 deep. Pretty hefty for a house door. Wondering what the door jamb part looked like ?
Click image for larger version. 

Name:	yale latch mde eng bolt5-8x1 5-8x1 1-8 7-26-17 1.jpg 
Views:	12 
Size:	239.0 KB 
ID:	18157Click image for larger version. 

Name:	yale night latch 2.jpg 
Views:	17 
Size:	289.8 KB 
ID:	18158Click image for larger version. 

Name:	yale night latch 3.jpg 
Views:	13 
Size:	267.3 KB 
ID:	18159Click image for larger version. 

Name:	yale night latch 4.jpg 
Views:	13 
Size:	249.9 KB 
ID:	18160Click image for larger version. 

Name:	yale night latch 5.jpg 
Views:	14 
Size:	250.5 KB 
ID:	18161Click image for larger version. 

Name:	yale night latch 6.jpg 
Views:	11 
Size:	185.9 KB 
ID:	18162Click image for larger version. 

Name:	yale night latch 7.jpg 
Views:	12 
Size:	279.3 KB 
ID:	18163