WWII B-Uhr (Beobachtungsuhr)

Ref. FL 23883 · Historical design · 1940–1945

The Luftwaffe navigator's watch, worn over the flight jacket. Type A dials (1940–1941) have a plain 12-hour ring; Type B dials (from 1941) add an inner hour ring inside a large minute track. Both dial types are the same watch, so all B-Uhr texts link here. Movements and case metals varied by maker.

Homages by price

Sizes in brackets are the difference from the original.

Homage	Price from	Share of original	Dia. mm	L2L mm	Thick mm	WR m	Crystal	Movement
Militado ML10 V2	$59	—	36.9 (−18.1)	43.9	10	100	Sapphire	Seiko VH31B
San Martin SN030 39mm (Ronda quartz)	$130	—	39 (−16)	49	12	200	Sapphire	Quartz
San Martin SN030 39mm (NH35)	$138	—	39 (−16)	49	12	—	Sapphire	Seiko NH35A
San Martin SN030 39mm (YN55A)	$138	—	39 (−16)	49	12	200	Sapphire	Epson YN55A
San Martin SN0117 41mm (ST3621)	$155	—	41 (−14)	50	13.2	100	Sapphire	Seagull ST3621
San Martin SN0117 41mm (NH35)	$158	—	41 (−14)	50	11.5	100	Sapphire	Seiko NH35A
San Martin SN033 38.5mm (YN55A)	$158	—	38.5 (−16.5)	48.5	12	100	Sapphire	Epson YN55A
San Martin SN0143 40mm	$168	—	40 (−15)	47	12.2	100	Sapphire	Epson YN55A
San Martin SN030 39mm Bronze (YN55A)	$175	—	39 (−16)	49	12	200	Sapphire	Epson YN55A
San Martin SN030 39mm Titanium (YN55A)	$175	—	39 (−16)	49	12	200	Sapphire	Epson YN55A
San Martin SN0117 41mm Bronze (NH35)	$188	—	41 (−14)	50	11.3	100	Sapphire	Seiko NH35A
San Martin SN030 39mm Titanium (NH35)	$198	—	39 (−16)	49	12	200	Sapphire	Seiko NH35A
San Martin SN037 44mm	$198	—	44 (−11)	53	10.6	100	Sapphire	Seagull ST3621
Islander 39mm Automatic Pilot (NH35, no date)	$199	—	39 (−16)	46	12	100	Sapphire	Seiko NH35A
Islander 39mm Automatic Pilot (NH35)	$199	—	39 (−16)	46	12	100	Sapphire	Seiko NH35A
Islander Aviator Automatic (NH35, no date)	$199	—	42 (−13)	48	12	100	Sapphire	Seiko NH35A
Islander Aviator Automatic (NH35)	$199	—	42 (−13)	48	12	100	Sapphire	Seiko NH35A
Islander Aviator Automatic (NH38)	$199	—	42 (−13)	48	12	100	Sapphire	Seiko NH38A
San Martin SN0117 41mm Bronze (ST3621)	$199	—	41 (−14)	50	9.8	100	Sapphire	Seagull ST3621
San Martin SN030 39mm Bronze (PT5000)	$208	—	39 (−16)	49	12	200	Sapphire	PT5000
San Martin SN060 42mm (PT5000)	$219	—	42 (−13)	51	12	100	Sapphire	PT5000
Islander 39mm Pilot	$229	—	39 (−16)	45.8	11.6	100	Sapphire	Seiko NH35A
Islander Aviator Automatic (NH36, no date)	$229	—	42 (−13)	48	12	100	Sapphire	Seiko NH36A
Islander Aviator Automatic (Miyota 82S0)	$249	—	42 (−13)	48	12	100	Sapphire	Miyota 82S0
San Martin SN030 39mm Bronze (Sellita SW200)	$356	—	39 (−16)	49	12	200	Sapphire	Sellita SW200-1
San Martin SN060 42mm (Sellita SW200)	$373	—	42 (−13)	51	12	100	Sapphire	Sellita SW200-1

Sources

• Monochrome, The History of the Pilot Watch Part Five, B-Uhr (five makers; FL 23883; 55mm originals; Type A 1940, Type B from 1941)
• Fratello, Hands-on with the Stowa Flieger Klassik 40 (B-Uhr history and makers' movements)